Question 679262
-5x + y = -2 
y=5x-2
-3x + 6y = _12
-3x+6(5x+2)=12
-3x+30x+12=12
27x=12-12
27x=0
x=0/27=0 ans.
y=5*0-2
y=0+2=2 ans.
Proof:
-3*0+6*2=12
0+12=12
12=12