Answer:
X=-7 and y=-12
Step-by-step explanation:
Step solve 2x-y=-2 for y
2x-y+2x=-2+-2x(add -2x to both sides)
-y=-2x-2
-1 -1
Y=2x+2
Step: substitute 2x+2 for y in 3x-3y=15
3x-3(2x+2)=15
-3x-6=15 (simply both sides of the equation)
-3x-6+6=15+6 (add 6 to both sides)
-3x=21
-3 -3. (Divide both sides by -3)
X=-7
