CountryBoy15
  • CountryBoy15
help me solve some equation
Mathematics
chestercat
  • chestercat
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CountryBoy15
  • CountryBoy15
1.x – 6 = 8 2.y + 5 = –12 3. -2c= –18
sophiaholder
  • sophiaholder
Okay so giving you the answer wouldn't help. You need to know how to do it.
CountryBoy15
  • CountryBoy15
i know thats why i asked help not tell

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sophiaholder
  • sophiaholder
Okay let me help.
CountryBoy15
  • CountryBoy15
ty and whos the mod here
sophiaholder
  • sophiaholder
My computer crashed sorry. Okay so for each equation, to solve for x you want to get it by itself.
sophiaholder
  • sophiaholder
To do that, you need to remove the numbers on the side of the equation x is at.
CountryBoy15
  • CountryBoy15
ok
sophiaholder
  • sophiaholder
For the first one, how would you get -6 to equal 0?
sophiaholder
  • sophiaholder
Any idea?
CountryBoy15
  • CountryBoy15
nope
sophiaholder
  • sophiaholder
Okay so to get rid of negative numbers, you need to add a positive number to it.
sophiaholder
  • sophiaholder
-6 + 6 = 0
sophiaholder
  • sophiaholder
After you add that to the side of the equation x is on, you have to add it to the other side.
CountryBoy15
  • CountryBoy15
so it would be x=6
sophiaholder
  • sophiaholder
So, x-6 = 8 +6 +6
CountryBoy15
  • CountryBoy15
so x=2
sophiaholder
  • sophiaholder
No, 6+8
CountryBoy15
  • CountryBoy15
wait no i got it x=14 ok
sophiaholder
  • sophiaholder
Yep!
sophiaholder
  • sophiaholder
Now try to do the second one.
CountryBoy15
  • CountryBoy15
yeah so the same for the others????\
sophiaholder
  • sophiaholder
Sorta.
sophiaholder
  • sophiaholder
if you have a positive number that you need to get rid of, you need to subtract.
CountryBoy15
  • CountryBoy15
would it be y=-7
sophiaholder
  • sophiaholder
Close! If you are subtracting from a negative number, you need to add
CountryBoy15
  • CountryBoy15
or did i mis a step
sophiaholder
  • sophiaholder
So -12 - 5 = -17
sophiaholder
  • sophiaholder
Do you understand?
CountryBoy15
  • CountryBoy15
ok so then y=-17
sophiaholder
  • sophiaholder
Yep!
sophiaholder
  • sophiaholder
Now can you do the last one?
CountryBoy15
  • CountryBoy15
what about this fractoin thisng its 1/4 a=3
sophiaholder
  • sophiaholder
It is VERY different for the last one.
sophiaholder
  • sophiaholder
Annoying I know, but when you have 3x that means it is 3*x right?
CountryBoy15
  • CountryBoy15
can you help me with this one then ill do the last one 1/4 a=3
sophiaholder
  • sophiaholder
*=multiply
CountryBoy15
  • CountryBoy15
right
sophiaholder
  • sophiaholder
okay well to do that one, 1/4 * a = 3
sophiaholder
  • sophiaholder
We can do two things here.
CountryBoy15
  • CountryBoy15
so it would be a=12
sophiaholder
  • sophiaholder
YES!
sophiaholder
  • sophiaholder
Good job!
CountryBoy15
  • CountryBoy15
ok well thats easy
sophiaholder
  • sophiaholder
So what do you do for the last one?
sophiaholder
  • sophiaholder
If it is multiplication, use division
CountryBoy15
  • CountryBoy15
ok l3ets see
sophiaholder
  • sophiaholder
Keep the c alone and focus on the 3
CountryBoy15
  • CountryBoy15
so would it be c=-36 jw
sophiaholder
  • sophiaholder
Okay, so no. If we have multiplication, we need to use division to get rid of the 3
sophiaholder
  • sophiaholder
or 2
CountryBoy15
  • CountryBoy15
no wait it would be c=-9 right
sophiaholder
  • sophiaholder
Yep. Except remember that a negative/negative = positive
sophiaholder
  • sophiaholder
So it would be 9
CountryBoy15
  • CountryBoy15
so it would be c=9 then right
sophiaholder
  • sophiaholder
Yep!
CountryBoy15
  • CountryBoy15
and can you help with 2 or 3 more thats all
CountryBoy15
  • CountryBoy15
heres the first 6.5 = –3 + n
sophiaholder
  • sophiaholder
Of course!
sophiaholder
  • sophiaholder
OKay so what do you think we would do first?
CountryBoy15
  • CountryBoy15
um lets see
CountryBoy15
  • CountryBoy15
-3 make it 3 maybe
sophiaholder
  • sophiaholder
Add 3 to both sides to get rid of -3. :)
CountryBoy15
  • CountryBoy15
so would be n=9.5 right??
sophiaholder
  • sophiaholder
Yep!
CountryBoy15
  • CountryBoy15
ok ty now 2 more please
CountryBoy15
  • CountryBoy15
then theres this 2/3x=6
sophiaholder
  • sophiaholder
ok so what do you think we should do first. Hint: We will need to use multiplication and division for this one
CountryBoy15
  • CountryBoy15
sry crashed and um maybe divison
sophiaholder
  • sophiaholder
Nope. IF we have a fraction beside the variable we need to get rid of the denominator.
sophiaholder
  • sophiaholder
To cancel out division, you need to use multiplication.
CountryBoy15
  • CountryBoy15
oh so how would it be like??
sophiaholder
  • sophiaholder
So, to get rid of 3 we need to multiply by 3 on both sides.
CountryBoy15
  • CountryBoy15
would it be x=9
sophiaholder
  • sophiaholder
Yes!! Good job!
CountryBoy15
  • CountryBoy15
yes ty one more and again ty now i get it a lil more bc im home schooled and never get it thanks
sophiaholder
  • sophiaholder
I'm homeschooled as well, so I understand.
CountryBoy15
  • CountryBoy15
x/4=12/6
CountryBoy15
  • CountryBoy15
thats awesome thanks for the help
sophiaholder
  • sophiaholder
Okay so on this one I would simplify first.
sophiaholder
  • sophiaholder
12/6 is...?
CountryBoy15
  • CountryBoy15
2??
sophiaholder
  • sophiaholder
Yeah lol.
sophiaholder
  • sophiaholder
I just realized that was probably a stupid question I apologize.
CountryBoy15
  • CountryBoy15
so would be x=8
sophiaholder
  • sophiaholder
Yep!
sophiaholder
  • sophiaholder
If you ever need anymore help, feel free to tag me if I am online.
CountryBoy15
  • CountryBoy15
lol thanks wish i could give more then one medal
sophiaholder
  • sophiaholder
Algebra is one of my favorite subjects.
CountryBoy15
  • CountryBoy15
ok i will thanks
sophiaholder
  • sophiaholder
And here is a medal for getting those last ones on your own!
CountryBoy15
  • CountryBoy15
oh ty so much have a great one thanks
sophiaholder
  • sophiaholder
No problem! You too!
CountryBoy15
  • CountryBoy15
yeah would have mostliky asked someone to give lol
sophiaholder
  • sophiaholder
lol
CountryBoy15
  • CountryBoy15
heres a word Q u think u could help
CountryBoy15
  • CountryBoy15
CountryBoy15
  • CountryBoy15
You need to make 18 cupcakes for a birthday party. You have already made 11. How many more cupcakes do you need to make? Write an equation and solve.
CountryBoy15
  • CountryBoy15
@whovianchick help please i think its 7 more they have to make idk
CountryBoy15
  • CountryBoy15
nvm i was right have a good one
sophiaholder
  • sophiaholder
Sorry! Glad you got it yourself though!

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