Question

-6+х=-2
у+7=-13
х+11=-4

Answer 1

-6+x=-2   y+7=13      x+11=-4
x=-2+6    y=13-6       x=-4-11
x=4         y=6             x=-15

Answer 2

1. 6-2=4
2.13-6=7
3. -4-11=-15