Question

1)-21-6m-6m=-10m-29
2)13-9x=x-17
3)-18x+7=-10x-1

Answer 1

1) -21-6m-6m=10m-29
-6m-6m-10m=21-29
-22m=-8|(-22)
m=-0,36
2)13-9x=x-17
-9x-x=-13-17
-10x=-30|(-10)
x=3
3)-18x+7=-10x-1
-18x+10x=-7-1
-8x=-8|(-8)
x=1