Question

would use elimination, just because I am more comfortable solving questions that way.

2x + 5y = -3
-15x - 5y = - 10

2x*-15 + 5y*-15 = -3*-15
-15x*2 - 5y*2 = -10*2

-30x - 75y = 45
-30x - 10y = -20
Cancel -30x from both equations,

-65y = 85
y = -85/65
Dividing by 5,
y = - 17/13