Solve each system by subst

1) y = 63-11

-2x-3y=-7

y = 63-11

y = 52

-2x-3y=-7

-2x-3 (52) = - 7

-2x-156 = - 7

move - 156 to the other side

sign changes from - 156 to + 156

-2x-156+156 = - 7+156

-2x = - 7+156

-2x = 149

divide both sides by - 2 to get x by itself

-2x/-2 = 149/-2

x = - 149/2

Answer:

(-149/2, 52)