Question

-x + y = -13-8x - 4y =-8solve using elmanation

Answer 1

-x + y = -13 --------------------(1)

-8x - 4y = -8 -------------------(2)

First, we will eliminate x and then solve for y

Mulltiply through equation (1) by 8

-8x + 8y = -104 --------------------(3)

Subtract equation (3) from equation (2)

-12y = 96

divide both-side of the equation by -12

y = 8

Then, we will go ahead and eliminate y then solve for x

Multiply equation (1) through by 4

-4x + 4y = -52 -------------------(4)

add equation (4) and equation (2)

-12x = -60

Divide both-side of the equation by -12

x = 5