Question

-5x + y = -2
- 3x + 6y = -12

Answer 1

1st equation: -5x+y=-2

y= -2+5x

2nd equation: -3x+6y= -12

-3x+6(-2+5x)= -12

-3x-12+30x= -12

-3x+30x=0

27x=0

x=0