2m-21=-30+m

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Solution for 2m-21=-30+m equation:


Simplifying
2m + -21 = -30 + m

Reorder the terms:
-21 + 2m = -30 + m

Solving
-21 + 2m = -30 + m

Solving for variable 'm'.

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

Add '-1m' to each side of the equation.
-21 + 2m + -1m = -30 + m + -1m

Combine like terms: 2m + -1m = 1m
-21 + 1m = -30 + m + -1m

Combine like terms: m + -1m = 0
-21 + 1m = -30 + 0
-21 + 1m = -30

Add '21' to each side of the equation.
-21 + 21 + 1m = -30 + 21

Combine like terms: -21 + 21 = 0
0 + 1m = -30 + 21
1m = -30 + 21

Combine like terms: -30 + 21 = -9
1m = -9

Divide each side by '1'.
m = -9

Simplifying
m = -9

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