Question

Use the elimination method to solve the system.


6x + 3y = –12
6x + 2y = –4

(10, –16)

(2, –8)

(–2, 8)

(–10, 16)

Answer 1

@blurbendy is this like the other one

Answer 2

solve for y

Answer 3

not really. we used substitution the last time. they want you to use the elimination method, so basically you have to choose which variable you want to get rid of first. i would recommend multiplying the entire second equation by -1

Answer 4

kk

Answer 5

what do you get?

Answer 6

-6x-2y=4

Answer 7

okay, so now you can add the two equations together and eliminate the x

6x + 3y = -12

+

-6x -2y = 4

Answer 8

what does your new equation become?

Answer 9

y=-8

Answer 10

perfect, so now substitute -8 for y in either the top or bottom equation. your choice.

Answer 11

kk

Answer 12

tell me what you get

Answer 13

@Ashley_Cute
This method is very simple you just need to cancel one variable that can be x or can be y

6x + 3y = –12
6x + 2y = –4
- - +
========
y=-8

Put the value od y in any equation
6x + 3y = –12
6x+3(-8)=-12
6x-24=-12
6x=-12+24
6x=12
x=12/6
x=2

Answer 14

x=-2

Answer 15

which equation did you substitute -8 in for?

Answer 16

+2 not -2

Answer 17

lol thx but i want learn how to do it not the answer

Answer 18

I explained it :)

Answer 19

well it shows me so thx

Answer 20

xD

Answer 21

which equation did you substitute -8 in for?

Answer 22

the top one

Answer 23

so you'd end up with

6x + 3(-8) = -12

6x - 24 = -12

6x = 12

x = 2

You must've got one of your signs switched around somewhere

Answer 24

so its 2 not -2

Answer 25

yes

Answer 26

thx

Answer 27

yw

Answer 28

Yw :)