Can Somebody please help me? Solve the following system of equations using substitution.

-3x -2(5x-7) = -12

-3x -10x +14 = -12

-13x = -26

x = 2

Use this value of 'x' in one of the equations to find the corrsponding value of 'y'

y = 5x-7

y = 5(2)-7

y = 3

Are you kidding?

A)  -3x -2(5x-7) = -12

-3x -10x +14 = -12

-13x = -26

B)   x = 2

Use this value of 'x' in one of the equations to find the corrsponding value of 'y'

y = 5x-7

y = 5(2)-7

C)  y = 3

D)     You HAVE to be able to figure this one out !