5m+9=2m-21

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


Simplifying
5m + 9 = 2m + -21

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

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

Solving
9 + 5m = -21 + 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.
9 + 5m + -2m = -21 + 2m + -2m

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

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

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

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

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

Divide each side by '3'.
m = -10

Simplifying
m = -10

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