5m-21=2m+9

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Solution for 5m-21=2m+9 equation:


Simplifying
5m + -21 = 2m + 9

Reorder the terms:
-21 + 5m = 2m + 9

Reorder the terms:
-21 + 5m = 9 + 2m

Solving
-21 + 5m = 9 + 2m

Solving for variable 'm'.

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

Add '-2m' to each side of the equation.
-21 + 5m + -2m = 9 + 2m + -2m

Combine like terms: 5m + -2m = 3m
-21 + 3m = 9 + 2m + -2m

Combine like terms: 2m + -2m = 0
-21 + 3m = 9 + 0
-21 + 3m = 9

Add '21' to each side of the equation.
-21 + 21 + 3m = 9 + 21

Combine like terms: -21 + 21 = 0
0 + 3m = 9 + 21
3m = 9 + 21

Combine like terms: 9 + 21 = 30
3m = 30

Divide each side by '3'.
m = 10

Simplifying
m = 10

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