anonymous
  • anonymous
I need help solvin the equation x/7-8=-10
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
okay I am ready and reporting to you help..
tiffanymak1996
  • tiffanymak1996
x/7 =-10+8
tiffanymak1996
  • tiffanymak1996
x/7 = -2 x=7 times -2 x=-14

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More answers

anonymous
  • anonymous
we are solving for x right?
anonymous
  • anonymous
yes
tiffanymak1996
  • tiffanymak1996
check your answer: x=-14 x/7 -8 = (-14)/7 -8 =-2-8 =-10
anonymous
  • anonymous
no no you can't do that when x/7 no
tiffanymak1996
  • tiffanymak1996
why?
anonymous
  • anonymous
whenever you see / it means divide
anonymous
  • anonymous
so therefore we x divided by 7
tiffanymak1996
  • tiffanymak1996
yeah, i know, when you change sides, it becomes mutiplying
anonymous
  • anonymous
correct
anonymous
  • anonymous
???
tiffanymak1996
  • tiffanymak1996
but you have to change sides with addition (or subtraction first before you can change sides with division)
anonymous
  • anonymous
so it should be 7x=-14
anonymous
  • anonymous
then divide by 7?
anonymous
  • anonymous
no it's divided here so that can not happen
anonymous
  • anonymous
anytime you have something divided by something you times it
anonymous
  • anonymous
in order for the x or whatever you are solving for.
anonymous
  • anonymous
ok, let's do this one for clarity.......1-n/5=12
anonymous
  • anonymous
subtract -1 from both sides...
anonymous
  • anonymous
you have n/5=11
anonymous
  • anonymous
so the answer is 55?
tiffanymak1996
  • tiffanymak1996
negative sign!
tiffanymak1996
  • tiffanymak1996
you should have -n/5 =11
anonymous
  • anonymous
-11?
anonymous
  • anonymous
oh, I see!!!
anonymous
  • anonymous
guys if you are doing this right than have X=??
anonymous
  • anonymous
-55
tiffanymak1996
  • tiffanymak1996
1- n/5 =12 1 -1 -n/5 =12-1 -n/5 =11 -n=55 n=-55
anonymous
  • anonymous
yipee!
tiffanymak1996
  • tiffanymak1996
gr8! just make sure you don't get confused with the signs
anonymous
  • anonymous
oh I see what you are doing now, I go step by step that is why I was thrown off by what you did
tiffanymak1996
  • tiffanymak1996
sry!
anonymous
  • anonymous
6t +3=-7
anonymous
  • anonymous
subtract 3 from both sides
tiffanymak1996
  • tiffanymak1996
and you can always check your answers by substituting x=? in you equation
anonymous
  • anonymous
6t=-10
anonymous
  • anonymous
divide by 6?
tiffanymak1996
  • tiffanymak1996
yes
anonymous
  • anonymous
answer is -2?
tiffanymak1996
  • tiffanymak1996
what is -10 divided by 6?
anonymous
  • anonymous
something isn't right, that is not one of my answwer choices
anonymous
  • anonymous
10 goes into 2 five and 2 goes into 6 3 so the answer is -5/3
tiffanymak1996
  • tiffanymak1996
well your steps are all correct...
anonymous
  • anonymous
I didn't have the lowest denominator
tiffanymak1996
  • tiffanymak1996
usually the answers are in simplest form, so simplify your fractions
tiffanymak1996
  • tiffanymak1996
what choices do you have?
anonymous
  • anonymous
Tiffany I am so sorry about this, I was trying to walk through the steps here so you could ask questions. if you have this I will go
anonymous
  • anonymous
I have -5/3 as an answer
anonymous
  • anonymous
no before you said -2
anonymous
  • anonymous
right, but godorovg came up with -5/3 and I have that as an answer choice
anonymous
  • anonymous
I did not simplify
anonymous
  • anonymous
unless it says to do it I would leave as is
anonymous
  • anonymous
15=-15-8u
anonymous
  • anonymous
add 15 to both sides
anonymous
  • anonymous
30-8u
anonymous
  • anonymous
30=-8u
anonymous
  • anonymous
then what?
anonymous
  • anonymous
divide by -8?
tiffanymak1996
  • tiffanymak1996
yes
anonymous
  • anonymous
15/-4?
anonymous
  • anonymous
-15/4?
tiffanymak1996
  • tiffanymak1996
yes
anonymous
  • anonymous
I need help with this one 0=1/6y+8=
anonymous
  • anonymous
subtract 8 from both sides
tiffanymak1996
  • tiffanymak1996
yes
anonymous
  • anonymous
0-8 is 0?
anonymous
  • anonymous
-8?
tiffanymak1996
  • tiffanymak1996
yes, -8
anonymous
  • anonymous
-8=1/6y
anonymous
  • anonymous
now what?
anonymous
  • anonymous
can I help here, this problem you are making it harder than it has be
tiffanymak1996
  • tiffanymak1996
because the variable is in the denominator, therefore we have to switch it to the other side
tiffanymak1996
  • tiffanymak1996
-8=1/6y -8(6y)=1/6y times 6y
tiffanymak1996
  • tiffanymak1996
so you multiply both sides with 6y
anonymous
  • anonymous
yes that is right, although when you first start this collect all a like terms and move then to one side and than times through the number being divided
anonymous
  • anonymous
show me
anonymous
  • anonymous
okay let us take this one x/7-8=-10 now here is how I would do this First take the -8 and add 8 to the -10 so now we have this x/7=-10+8 than take this and do the sub to get -2 so now we have x/7=-2 once you have than take the seven ant times to the two so now we have X= -14 like that
anonymous
  • anonymous
ok
anonymous
  • anonymous
-8=1/6y?
anonymous
  • anonymous
okay now you tell me
anonymous
  • anonymous
multiply both sides by 1/6?
tiffanymak1996
  • tiffanymak1996
you multiply both sides with 6y
anonymous
  • anonymous
yes
anonymous
  • anonymous
but it is 1/6 not just six
anonymous
  • anonymous
so y=1/6x8?
anonymous
  • anonymous
yes
anonymous
  • anonymous
or 48?
tiffanymak1996
  • tiffanymak1996
it should be y=1/-48
anonymous
  • anonymous
oh yes, because it was a -8
tiffanymak1996
  • tiffanymak1996
since: 1/6y =-8 1/(6 times-8) =y so, y=1/-48
anonymous
  • anonymous
yes it that is the y=1/-48
anonymous
  • anonymous
okay, thanks guys! I'm tired...going to bed, goodnight! Thanks for your help!
anonymous
  • anonymous
hey no problem glad I could you help you :)
tiffanymak1996
  • tiffanymak1996
gd nite!
anonymous
  • anonymous
tiffany great job!!
tiffanymak1996
  • tiffanymak1996
u too!
tiffanymak1996
  • tiffanymak1996
it's funny that when erinhass says good night , it's actually good morning for me. :)
anonymous
  • anonymous
yeah and it's night time where I am as well
tiffanymak1996
  • tiffanymak1996
u live in the states?
anonymous
  • anonymous
yes Portland Ore
tiffanymak1996
  • tiffanymak1996
oh, good for u, i've always wanted to live in the states
anonymous
  • anonymous
yeah funny thing I have always wanted to leave the States
tiffanymak1996
  • tiffanymak1996
guess we would all like to explore more.
anonymous
  • anonymous
no not to just explore, it falls under the job market here stinks and the education system is messed up for kids, although I don't have any/
tiffanymak1996
  • tiffanymak1996
i'm a victim under the education system in hong kong :(
anonymous
  • anonymous
yeah i have heard about that as well. I am a math person that you can graphs in my head and will be studying Engineering Physics soon
anonymous
  • anonymous
I am what some would call human calc
tiffanymak1996
  • tiffanymak1996
:) good for you, sometimes i do that , and miss steps in exams, got a b instead of a, frustrating
anonymous
  • anonymous
yeah, that is why I tell all people that i work step by step in that way you can go back to see what is wrong.
tiffanymak1996
  • tiffanymak1996
yeah, i know, that's why i have to be extra careful when i'm doing my exams. And i do tutoring, helps a lot with my presentation skills
anonymous
  • anonymous
it drives me nuts sometimes on here when I see people skipping around. that is just plain doesn't make sense to me
tiffanymak1996
  • tiffanymak1996
sometimes people skip unintentionally, you know, they calculate in their head, and skipped a few steps, sometimes they don't notice it.
anonymous
  • anonymous
yes true and may be this is something I will have to deal with, still I can not understand why skip steps what does that prove?
tiffanymak1996
  • tiffanymak1996
i personally think if one is confident with that particular question, and skipping a little steps is alright, just don't skip major ones, step on scrap papers, yes you can skip, but steps in exams, no.
tiffanymak1996
  • tiffanymak1996
i just tell myself be considerate, and help the techer go through the papers as smoothly as possible, work hard for years just to make sure i won't skip anything.
anonymous
  • anonymous
you just made a fan.
tiffanymak1996
  • tiffanymak1996
u too.:), and thx.
anonymous
  • anonymous
That is what I try to do here, only that I want the person I am helping to tell what they know and I help from that point
anonymous
  • anonymous
I don't just do the work for them..
tiffanymak1996
  • tiffanymak1996
yeah, sorry about that , will work hard for that, for me it's kind of harder to explain when not face to face
anonymous
  • anonymous
yeah, I can how it could be hard for you, but if you want sometime I can give you tips on to do things a little better only if you want tips
anonymous
  • anonymous
*see
tiffanymak1996
  • tiffanymak1996
yeah, of course, pls do, i'm all ears :)
anonymous
  • anonymous
okay first what type of math do you help with this mostly?
tiffanymak1996
  • tiffanymak1996
algebra, calculas, and the basics, just high school stuff.
anonymous
  • anonymous
okay with all these subjects, you need to get the student in which you are helping to tell what they need help with.
anonymous
  • anonymous
than before you do any of the work have them show you what they know about that problem already and ask to see what they are having trouble with
tiffanymak1996
  • tiffanymak1996
ok
anonymous
  • anonymous
than once the it is clear, work the problem by typing it out in words and than draw it like you were doing. In the typing step by step always so the student can see what is happening where
tiffanymak1996
  • tiffanymak1996
ok, thx a lot!
anonymous
  • anonymous
sometimes it won't matter if draw the problem if student doesn't get what is going on. So that is why I type it out in all steps
tiffanymak1996
  • tiffanymak1996
yeah, i find that if students can figure out the problem themselves, it has a greater impression on them
anonymous
  • anonymous
that is always my goal as well.
anonymous
  • anonymous
for example this x/7-8=-10 the student wasn't getting it the whole thing that is why I typed out the steps to show that they are making it too hard.
anonymous
  • anonymous
also to get the student to ask questions as well
tiffanymak1996
  • tiffanymak1996
yeah, interaction helps.
anonymous
  • anonymous
A must in math, because you and the student have to be involved in order to teach
anonymous
  • anonymous
also just know you won't be there when they are tested. so have the student do the work and you just guide them
anonymous
  • anonymous
unless they just not getting it.
tiffanymak1996
  • tiffanymak1996
absolutly right, are you like, a teacher?
anonymous
  • anonymous
No. I am a Physics Engineering major in college
tiffanymak1996
  • tiffanymak1996
cool, always have love physics, physics rocks!
anonymous
  • anonymous
yeah, and bio sucks
tiffanymak1996
  • tiffanymak1996
same here!
anonymous
  • anonymous
Chem and Physics oh yeah,,
tiffanymak1996
  • tiffanymak1996
uh huh
anonymous
  • anonymous
Bio not on your life
anonymous
  • anonymous
Anything to do with math I love
tiffanymak1996
  • tiffanymak1996
sry, mom needs me to have lunch, gotta go.
anonymous
  • anonymous
okay have nice day
anonymous
  • anonymous
cya latter
tiffanymak1996
  • tiffanymak1996
talk later :)

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