x+2y=-7 4x+3y=-33am nevoie de ajutor

Răspuns:
x+2y=-7 /×(-4)
4x+3y=-33
_________
-4x-8y=-28
4x+3y=-33
_________
/ 5y=5=> y=1
4x+3=-33
4x=-36
x=-9