Question

Solve the system by using elimination or elimination with multiplication. \Show work please! Thanks!!! :D
3x + 4y = -2 and 2x - 3y = 10

Answer 1

i think i answered this with steps in previous post

Answer 2

satallite to the resuce!

Answer 3

i am sure i did.

Answer 4

steps at bottom here
http://openstudy.com/users/reinadetexting#/users/reinadetexting/updates/4e39ee3a0b8bf47d065ff66d

Answer 5

no u didnt now answer it por favor!

Answer 6

i got your answer!

Answer 7

yay!!!!!! post it then, saif!

Answer 8

alright

Answer 9

2, -2

Answer 10

So get an equation that solves for x.
2x - 3y = 10
Add 3y on the other side =
2x = 10 + 3x
Divide it by 2
x = 10+ 3y /2
Now plug it into the other equation:
3x + 4y = -2
Subsitute in:
3 (10 + 3y/2) + 4y = -2
Distribute 3
gives us :
30/2 + 9y/2 + 4y = -2
Simplify
15 + 9y/2 + 4y = -2
Get similar denomators for 9y/2 and 4y/2
giving
15 + 9y/2 + 8y/2 = -2
Bring 15 onto the other side by substracting
+9y/2 + 8y/2 = -17
+17y/2 = -17
Times by 2 to get rid of denominator
17y = -17 * 2
17y = -34
y = -2

Answer 11

To solve for x plug it into orginal equation (y = -2)
3x + 4y = -2
3x + 4(-2) = -2
3x -8 = -2
Add 8 to the other side
3x = -2 + 8
3x = 6
x = 2