Answer:
(-8, -8)
Explanation:
You need to solve one of the equation for x or y. I am going to solve the bottom equation for x
4x -4y = 0 Add 4y to both sides
4x = 4y Divide both sides by 4
x = y Substitute y in for x in the first equation
-7x + 4y = 24
-7y + 4y = 24 Combine like terms
-3y = 24 Divide both sides by -3
y = -8
Since x = y
x = -8
Check:
-7y + 4y = 24
-7(-8) + 4(-8) = 24
56 - 32 = 24
4x - 4y = 0
4(-8) - 4(-8) = 0
-32 + 32 = 0
0 = 0