Solve by Elimination x-8y=18 - 16x + 16y=-8

The value of y is - 2.5The value of x is - 2.

x - 8y = 18

-16x + 16y = - 8

We can multiply each term in the first equation by 2 to better assist this elimination.

2x - 16y = 36

Now, we can use elimination.

Add equations together.

-14x = 28

Divide both sides by - 14

x = - 2

Now that we have a value for x, we can solve for y.

-2 - 8y = 18

Add 2 to both sides.

-8y = 20

Divide both sides by - 8

y = - 2.5