Question

Use addition to solve the linear system of equations. Include all of your work in your final answer.

-x-y=4
x+2y=4

Answer 1

The solution is the point (-12,8)

Explanation:

we have

-x-y=4 ----> equation A

x+2y=4 ----> equation B

Adds equation A and equation B and solve for y

-x-y=4

x+2y=4

---------------

-y+2y=4+4

y=8

Find the value of x

x+2y=4

x+2(8)=4

x=4-16

x=-12

therefore

The solution is the point (-12,8)