Elimination or substitution

Question

{-15x+2y=-6

{14x+4y=-2

Answer 1

I would recommend elimination...

Multiplies top equation by -2 and then adds that to second equation:

44x = 10

x=10/44 = 5/22 = 0.2272

y = [-6 - (-15)(5/22) ]/2 = -1.2954

Yes, it checks