Answer:
x = -3 y = -8 (-3,-8)
Explanation:
first you would subsitute the y with (2x-2) in -3x+4y=-23 as y=2x-2
giving you-3x+4(2x-2)=-23
next you distribute the 4 to (2x-2) leaving you with -3x+8x-8=-23
then add -3x+8x to get 5x, having 5x-8=-23
add 8 to both sides canceling out 8 on one side and adding 8 to the other leaving you with 5x=-15 then you divide 5 from 5x to both sides leaving you with x = -3
next is y since you have x you would substitute the x in y=2x-2 with -3 getting y=2(-3)-2 then you multiply the 2 and -3 so you have y=-6-2 then you subtract those getting y = -8