Question

8x + 3y = -9
-8x + y = 29

Answer 1

(-3,5)

Explanation:

8x + 3y = -9

-8x + y = 29

Add the two equations together to eliminate x

8x + 3y = -9

-8x + y = 29

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

4y = 20

Divide each side by 4

4y/4 = 20/4

y = 5

Now we need to find x

8x + 3y = -9

8x + 3(5) = -9

8x +15 = -9

Subtract 15 from each side

8x +15-15 = -9-15

8x = -24

Divide each side by 8

8x/8 = -24/8

x = -3

(-3,5)