-2(-9m-2)-1=21+10m

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Solution for -2(-9m-2)-1=21+10m equation:


Simplifying
-2(-9m + -2) + -1 = 21 + 10m

Reorder the terms:
-2(-2 + -9m) + -1 = 21 + 10m
(-2 * -2 + -9m * -2) + -1 = 21 + 10m
(4 + 18m) + -1 = 21 + 10m

Reorder the terms:
4 + -1 + 18m = 21 + 10m

Combine like terms: 4 + -1 = 3
3 + 18m = 21 + 10m

Solving
3 + 18m = 21 + 10m

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '-10m' to each side of the equation.
3 + 18m + -10m = 21 + 10m + -10m

Combine like terms: 18m + -10m = 8m
3 + 8m = 21 + 10m + -10m

Combine like terms: 10m + -10m = 0
3 + 8m = 21 + 0
3 + 8m = 21

Add '-3' to each side of the equation.
3 + -3 + 8m = 21 + -3

Combine like terms: 3 + -3 = 0
0 + 8m = 21 + -3
8m = 21 + -3

Combine like terms: 21 + -3 = 18
8m = 18

Divide each side by '8'.
m = 2.25

Simplifying
m = 2.25

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