anonymous
  • anonymous
Can someone PLEASE give me a 7th grade algebra equation, and show me how to solve it?
Mathematics
  • Stacey Warren - Expert brainly.com
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
amistre64
  • amistre64
7x + 10 = 59
anonymous
  • anonymous
2x + 1 = 3 undo +1 by -1 from both sides to get balanced 2x=2 divide both sides by 2 x=1
anonymous
  • anonymous
So, you would have to go through the order of operations, and start with the... ugh

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anonymous
  • anonymous
i'm so stupid >:(
anonymous
  • anonymous
inverse operation + and -, x and /
amistre64
  • amistre64
we can start simpler: how about: x+3 = 5
anonymous
  • anonymous
that would be 2
amistre64
  • amistre64
you are correct, but why is it 2?
anonymous
  • anonymous
because 3- 5=2
anonymous
  • anonymous
always undo addition or subtraction first then multiplication or division...you got it!
anonymous
  • anonymous
:D so, can you give me a harder one?
amistre64
  • amistre64
almost correct :) 5 - 3 = 2
anonymous
  • anonymous
5-3 = 2
anonymous
  • anonymous
wait what did i say?
amistre64
  • amistre64
3 - 5 = -2
anonymous
  • anonymous
oops thats what i meant... that would be a negative right?
anonymous
  • anonymous
yes!
anonymous
  • anonymous
sweet
anonymous
  • anonymous
very good!
amistre64
  • amistre64
but lets step thru this easy one so you can know what is going on underneath it all. It does no good to simply go ..thats an easy one! and give the answer right?
anonymous
  • anonymous
true
anonymous
  • anonymous
P.E.M.D.A.S.
amistre64
  • amistre64
x + 3 = 5 that equal sign means that we want to keep things in balance, have you ever played on a seesaw?
anonymous
  • anonymous
yes
amistre64
  • amistre64
what happens when the kids on each end weigh the same?
anonymous
  • anonymous
one will have to push off to make them move, or else it will be balanced. and that would still be 2
amistre64
  • amistre64
correct :) now, we want to keep our equation balanced at ALL TIMES!! otherwise it becomes a lie...and lies are bad :)
anonymous
  • anonymous
yes... haha
amistre64
  • amistre64
if we want to solve for "x" we need to get it all by itself so we can ask it some personal stuff.... we need to get rid of all that stuff that is attached to it right?
anonymous
  • anonymous
yeah... so you would have to follow order of operations?
amistre64
  • amistre64
order of operations is good to know, and we will get to that sometime.. but lets take this step by step so we understand the basics that every other problem you come across will face ok?
anonymous
  • anonymous
ok. i'm sorry i suck at math :/
anonymous
  • anonymous
those are the basics just remember to use the order of operations backwards ; )
amistre64
  • amistre64
so lets look at the (x+3). its got extra stuff; it has a (+3) sticking to it right? If we could get this to be more like (x+0) that would be great right?
anonymous
  • anonymous
yes i think?
amistre64
  • amistre64
does x+0 = x?
anonymous
  • anonymous
yes
amistre64
  • amistre64
then we want x+0 :) how do we get rid of (+3) and turn it into "0"??
anonymous
  • anonymous
ummmmm.... put it in parenthises?
anonymous
  • anonymous
NO
amistre64
  • amistre64
i wish lol
anonymous
  • anonymous
WE WOULD SUBTRACT
amistre64
  • amistre64
thats correct, we would take away 3. So lets do that here: x+3-3 = 5-3 because if we take away from one side we gotta take away from the other right?
anonymous
  • anonymous
yeah. so x would equal 2?
amistre64
  • amistre64
it will....but lets see why. we get x+0 = 2 from this. And we all no that zero is pretty useless...not!! x+0 = x, and thats important to know :) so x = 2
anonymous
  • anonymous
ahhh i understand.
anonymous
  • anonymous
wait where did you get the 5?
anonymous
  • anonymous
oh no nevermind.
amistre64
  • amistre64
I dug around in the recesses of my brain and pulled it out to create a 7th grade algebra question for you lol
anonymous
  • anonymous
:D
amistre64
  • amistre64
tell me what I do with this one now: t - 4 = 3
anonymous
  • anonymous
turn the 4 into 0? i think i know the answer to this though
anonymous
  • anonymous
1?
amistre64
  • amistre64
lets turn the 4 into how? we have t - 4 .... what doe we do to turn it into t+0 ??
anonymous
  • anonymous
O.O
amistre64
  • amistre64
4 into 0 how...
anonymous
  • anonymous
oh subtract
amistre64
  • amistre64
lets try that and see if it works ok? t - 4 - 4 = 3 t - 8 = 3 .... that didnt do us much good did it? lets go back to: t - 4 = 3
anonymous
  • anonymous
ok. so would we change it to 4-3=t?
amistre64
  • amistre64
stay with me now :) do you see that t is attached to a (-4)? t-4
anonymous
  • anonymous
¿:ı
anonymous
  • anonymous
yes
anonymous
  • anonymous
a negative 4?
amistre64
  • amistre64
good, yes :)
amistre64
  • amistre64
how do we get rid of a -4?
anonymous
  • anonymous
add 4
amistre64
  • amistre64
exactly :)
amistre64
  • amistre64
lets try it out: t -4+4 = 3+4 t-0 = 7 t = 7
anonymous
  • anonymous
i think i understand that.. but why wouldn't the 3 be a negative if its... wait i'm confusing myself....
amistre64
  • amistre64
we add 4 to EACH side right? t -4+4 = 3+4 what does 3+4 =?
anonymous
  • anonymous
7....
anonymous
  • anonymous
OH
anonymous
  • anonymous
i understand
amistre64
  • amistre64
good :)
amistre64
  • amistre64
wanna try another one?
anonymous
  • anonymous
thanks you for doing this for me. and yes please
anonymous
  • anonymous
2x+8=16
anonymous
  • anonymous
you have to do the oppsite \
anonymous
  • anonymous
¿:ı
amistre64
  • amistre64
youre welcome: lets try something related, but different now. we will get to that one soon enough
anonymous
  • anonymous
ok
amistre64
  • amistre64
5x = 15
anonymous
  • anonymous
sounds good
anonymous
  • anonymous
-8 both sides
anonymous
  • anonymous
2x+8=16
anonymous
  • anonymous
ummm 5x would be like, 5• 5?
amistre64
  • amistre64
it would be the same concept as 5*5 right.
anonymous
  • anonymous
so... would you be solving for x in that equation?
anonymous
  • anonymous
2x+8=16 -8 -8 2x=8 2x/2=8/2 x=4
amistre64
  • amistre64
yes. if we add to get rid of a subtraction. And we Subtract to get rid of an addition; what do youthink we might do to get rid og a multiplier?
anonymous
  • anonymous
oh xcrap.. divide?
anonymous
  • anonymous
i hpoe this helps
amistre64
  • amistre64
divide is correct:)
anonymous
  • anonymous
2x+8=16 -8 -8 2x=8 2x/2=8/2 x=4
anonymous
  • anonymous
that one
anonymous
  • anonymous
i suck at dividing :D thanks for being patiant
anonymous
  • anonymous
do you get my eample
amistre64
  • amistre64
we dont have to know alot about division for this really; we only have to know that any number divided by itself equals 1
anonymous
  • anonymous
ok
anonymous
  • anonymous
sarhouse
amistre64
  • amistre64
why is the number 1 important to us in multiplying?
anonymous
  • anonymous
2x+8=16 -8 -8 2x=8 2x/2=8/2 x=4
anonymous
  • anonymous
yes... so.... what would we divide? 5 ÷ 5? that would =1
amistre64
  • amistre64
correct
anonymous
  • anonymous
because... its like a place holder? i have no idea
amistre64
  • amistre64
what does 1 times a number =? x * 1 = ?
anonymous
  • anonymous
5x=15 /5 /5 x=3
anonymous
  • anonymous
that would be x... just like 10 • 1= 10
amistre64
  • amistre64
you are correct :)
anonymous
  • anonymous
sarahouse i sloved it
anonymous
  • anonymous
so, the answer is.....
anonymous
  • anonymous
its sarahrose
amistre64
  • amistre64
sara1000: solving it is not the issue :)
amistre64
  • amistre64
5x = 15 you say we need to divide by 5 correct? do we do that to both sides?
anonymous
  • anonymous
and i'm kind of ignoring what you say sarah1000 nothing personal, but amistre64 is helping alot
anonymous
  • anonymous
yeah... so.... would we get rid of the x?
amistre64
  • amistre64
the x we want to keep, its gona tells us its secrets when we get it all alone :)
anonymous
  • anonymous
WOA haha XD so.. do we get rid of anything?
anonymous
  • anonymous
5x=15 /5 /5 x=3 its that easy first you do the oppsisite of mulipling 5x is divison then you divided 5 form both sides to get x by it self then you divded it and you get 3
amistre64
  • amistre64
we can remove that 5 from it by division: 5x/5 = x ok? 5x/5 = 15/5 x = 15/5 is our answer. You can reduce it some if you want, but a calculator will accept it as is ;)
anonymous
  • anonymous
15/3=3 becuase on the other side you dont have to divided it all you have to do it cross out the 5 beacuse its the same the you write x=3
anonymous
  • anonymous
what is the /?
anonymous
  • anonymous
oh a fraction?
anonymous
  • anonymous
divison
anonymous
  • anonymous
¿:ı
amistre64
  • amistre64
when typing out on a keyboard, we represent the fraction bar, which is also a division bar, by "/"
anonymous
  • anonymous
easy
anonymous
  • anonymous
ooooh
anonymous
  • anonymous
sara please im trying >:(
anonymous
  • anonymous
ok
amistre64
  • amistre64
suppose we have somethig like this to solve: 4x = 3
anonymous
  • anonymous
am try to make you understand
anonymous
  • anonymous
we would do he same thing as the first time? just, 4 times itself?
anonymous
  • anonymous
how diid you become a superhero
amistre64
  • amistre64
i taught my kids to walk by encouraging them to take baby steps :) not by pushing them down :)
amistre64
  • amistre64
we would divide by 4 that is correct :)
anonymous
  • anonymous
wow how old are you? lol not trying to be mean
amistre64
  • amistre64
older than my kids ;)
anonymous
  • anonymous
so.. (4•4)=3?
anonymous
  • anonymous
haha
amistre64
  • amistre64
we need to "divide" by 4, not multiply. remember. 4x/4 = 3/4 x = 3/4 do you see it?
anonymous
  • anonymous
amistre64
anonymous
  • anonymous
yes ¿:) i think
amistre64
  • amistre64
yes sara?
anonymous
  • anonymous
how do you make people be your fan
anonymous
  • anonymous
right next to their name it says "Become A Fan" click it
amistre64
  • amistre64
i dont make anyone be my fan..... they just like pushing little thumb buttons for all I know ;)
anonymous
  • anonymous
:)
anonymous
  • anonymous
its because you are so much better then searching the internet and only getting 1 minute free trials
amistre64
  • amistre64
Lets try another one. r/3 = 2 since this is divisiion stuck to the "r" what do we need to do?
anonymous
  • anonymous
uhhhh :ı
amistre64
  • amistre64
we got 4 option: addition subtraction multiplication and division. we already know when to add and subtract, and this doesnt look like those. we know to divide when its stuck by multiplication.....so what should we do when its stuck by division? yor best guess
anonymous
  • anonymous
multiply... and we would have to do that on both sides?
amistre64
  • amistre64
that is correct!!
anonymous
  • anonymous
sweet~! i'm sorry ill brb
anonymous
  • anonymous
sara can you become my fan
amistre64
  • amistre64
r/3 = 2 when you get back, let me know what we need to multiply both sides by :)
amistre64
  • amistre64
sara1000, since you know how to do the algebra ill be your fan ;)
anonymous
  • anonymous
ok
anonymous
  • anonymous
M IN 8 GRADE
amistre64
  • amistre64
8th grade is a pretty big accomplishment :)
anonymous
  • anonymous
ok
amistre64
  • amistre64
it takes alot of work to get out of 5... or so my daughter would have me beleive :)
anonymous
  • anonymous
where is sararose
amistre64
  • amistre64
dunno, floated off into the ether to dance with the stars i spose...
anonymous
  • anonymous
im so sorry i had to take the neighbor a cassorole dish
anonymous
  • anonymous
srarose become my fasn plz
amistre64
  • amistre64
tuna cassarole? bean cassarole? mac and cheese cassarole?
anonymous
  • anonymous
i have no idea lol. what sucks is the werent even there.
amistre64
  • amistre64
:) so, where were we... r/3 = 2 .... you say we multiply...by what?
anonymous
  • anonymous
by the 3?
anonymous
  • anonymous
sarose
anonymous
  • anonymous
plz be my fan
amistre64
  • amistre64
thats correct :) lets try it and see..... 3 * r/3 = 2 * 3 1*r = 6 r = 6 hey, it worked :)
anonymous
  • anonymous
i am your fan
anonymous
  • anonymous
ok
anonymous
  • anonymous
ok.. so 6/3=2?
anonymous
  • anonymous
makes sense
amistre64
  • amistre64
yes :)
anonymous
  • anonymous
sweet :)
amistre64
  • amistre64
all the problems your ever going to run itno, will use these 4 basic operations to solve.
anonymous
  • anonymous
ok...
amistre64
  • amistre64
with practice, youll be better at it than me :)
anonymous
  • anonymous
i doubt that! haaha are you like a teacher or something? and can u give me a harder one too?
amistre64
  • amistre64
I suppose I am an "or something" :)
anonymous
  • anonymous
haha
anonymous
  • anonymous
i just realized that this site is.. like twitter! lol
amistre64
  • amistre64
the hardest one youll come across in algebra classes will tend to be like this: 2x^2 -6x -4 = 0 and solve for x :)
anonymous
  • anonymous
¿:ı what is the ^?
amistre64
  • amistre64
its a symbol used for an exponent. if you havent seen exponents yet...yuo will :)
amistre64
  • amistre64
2^2 = 4 3^2 = 9 4^2 = 16
amistre64
  • amistre64
x^2 = x*x = x^2
anonymous
  • anonymous
i have in class.. but i'm like the dumbest one in math, and im in college level in reading! l
anonymous
  • anonymous
oh
anonymous
  • anonymous
¿:ı
amistre64
  • amistre64
lets keep these equations linear for you to practice with :)
anonymous
  • anonymous
isnt it like 3^3 would be 3 times 3 times 3?
amistre64
  • amistre64
thats right
amistre64
  • amistre64
there is another symbol used called a factorial: 4! means 1*2*3*4 6! means 1*2*3*4*5*6
anonymous
  • anonymous
is there a way to close the group chat thing? i can't friggin concintrate
anonymous
  • anonymous
oh thats weird 4! sounds like an excied 4 lol
amistre64
  • amistre64
nah, I suggested they move it somewhere else, but they seem to think its in a good spot
anonymous
  • anonymous
butbut how is that different? then just plain 4?
amistre64
  • amistre64
4 = 1+1+1+1 = 4 4^4 = 4 *4 *4 *4 = 256 4! = 1* 2 * 3 * 4 = 24
anonymous
  • anonymous
oh... so like 4+2! would still = 2?
amistre64
  • amistre64
lets see :) 4 + 2! = 4 + (1*2) = 4 + (2) = 6
anonymous
  • anonymous
but isn't 1 • 2 just going to = 2?
anonymous
  • anonymous
oops i didnt't mean = 2 i meant 6. lol
amistre64
  • amistre64
thats right. 1*2 = 2 :)
anonymous
  • anonymous
oh sweet. so, if you had 3 • 4! it would be (24•3) right
amistre64
  • amistre64
exactly :)
amistre64
  • amistre64
its just a short way for writing large numbers...thats all. 512! is easier and quicker to write than whatever number that actually equals :)
anonymous
  • anonymous
oooooooooh :D
anonymous
  • anonymous
so... what would a difficult- like 7th grade prblem be
amistre64
  • amistre64
3x -7 = 8 ; now the trick becomes knowing what to do first in this one:)
amistre64
  • amistre64
i remember it this way; first get rid of the neighbors then get rid of the spouse :)
anonymous
  • anonymous
can you use the order of operations in that?
anonymous
  • anonymous
:O thats mean lol
amistre64
  • amistre64
the order of operations are worked backwards if you want to try them, but I never do ;)
amistre64
  • amistre64
that x wants to be all alone, and the neighbors are over adding to the commotion and eating all the snscks ; so subtract them away (or add) to get rid of them
anonymous
  • anonymous
so, pemdas would be sadmep lol if you say that out loud it sounds like sad mop
anonymous
  • anonymous
oooh
amistre64
  • amistre64
it can be :) lets get rid of the neighbor in this problem, lets send it over to the other side of the street (the equal sign). 3x - 7 = 8 how do we get rid of our -7 neighbor?
anonymous
  • anonymous
we would have to add 7. so, it would be 3x (-7 + 7 = 0 ) = 8? or somthin like that?
amistre64
  • amistre64
good :) 3x -7+7 = 8+7 3x = 15 now we have a real close and personal 3 stuck to us, its wanting to cuddle, and talk about our feelings and all that bothersome stuff :) How do we send him away? 3x = 15
anonymous
  • anonymous
sense we are the only ones veiweing, if u could email me at sarah12_rose@yahoo.com and u could help me if one of us has to go? thanks :)
amistre64
  • amistre64
id rather keep it to in here, just for precations :)
anonymous
  • anonymous
what a creepy a 3 XD
anonymous
  • anonymous
IM NOT A FREAK lol i swear
amistre64
  • amistre64
lol :)
anonymous
  • anonymous
wouldnt we have to subtract again? what i dont necasarrily get is how thre isn't really an operation to do there?
amistre64
  • amistre64
i got about 5 minutes before I have to head to class..... 3x is stuck together by multiplication; its means 3 * x
anonymous
  • anonymous
ohhh
anonymous
  • anonymous
well, you can head off to lass. i dont want to keep you... haha
anonymous
  • anonymous
class*
amistre64
  • amistre64
but were almost done :) 3x = 15 ..... how to get rid of that pesky 3 ?
anonymous
  • anonymous
divide?
amistre64
  • amistre64
divide!! say it what confidence :) yes. 3x/3 = 15/3 1x = 5 x = 5 yay!!
anonymous
  • anonymous
cool! thank you so much. you have helped a ton
amistre64
  • amistre64
youre welcome :) to double check ourselves we should plug that x = 5 into our eqution and see if its true: 3x - 7 = 8 3(5) - 7 = 8 15 - 7 = 8 8 = 8 ....its good ;)
amistre64
  • amistre64
Ciao :)
anonymous
  • anonymous
the eight-grade dance committee sold 203 tickets last year and 249 tickets this year.what is thet best esimate of the percent increase of the number of tickets sold?
anonymous
  • anonymous
can you help me
anonymous
  • anonymous
see ya :)
anonymous
  • anonymous
the eight-grade dance committee sold 203 tickets last year and 249 tickets this year.what is thet best esimate of the percent increase of the number of tickets sold?
anonymous
  • anonymous
im sorry i suck at percentiges too... lol
amistre64
  • amistre64
sara1000; I have to head to class now for a few hours, illl try later ;)
anonymous
  • anonymous
what class

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