what is the solution of the following linear system?

-5x - 5y = -6
-5/2x - 5/2y = -6

a) none
b) (-2,2)
c)(-,2,-2)
d) infinite number of solutions

and the answer i picked was a or d

thanks :)

what is the solution of the following linear system?

-4x - y = 5
-12x - 3y = 15

a) (-2,1)
b) none
c) (3,-2)
d) infinite number of solutions