Substitute the 2x+2 for y in the first equation:
-4x - (2x+2) = 4
Distribute that negative:
-4x - 2x - 2 = 4
Combine like terms:
-6x - 2 = 4
Add 2 to both sides:
-6x = 6
Divide by -6:
x = -1
Substitute that -1 into either equation:
y= 2x + 2
y= 2(-1) + 2
y= -2 + 2
y= 0
Answer:
x = -1
y = 0
