1)-21-6m-6m=-10m-29
– 6m – 6m + 10m = – 29 + 21
-2m = -8
m = 4
2)13-9x=x-17
– 9x – x = – 17 – 13
-10x = -30
x = 3
3)-18x+7=-10x-1
– 18x + 10x = – 1 – 7
-8x = -8
x = 1
1)-21-6m-6m=-10m-29
– 6m – 6m + 10m = – 29 + 21
-2m = -8
m = 4
2)13-9x=x-17
– 9x – x = – 17 – 13
-10x = -30
x = 3
3)-18x+7=-10x-1
– 18x + 10x = – 1 – 7
-8x = -8
x = 1