-5m+-15=21-7m

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Solution for -5m+-15=21-7m equation:


Simplifying
-5m + -15 = 21 + -7m

Reorder the terms:
-15 + -5m = 21 + -7m

Solving
-15 + -5m = 21 + -7m

Solving for variable 'm'.

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

Add '7m' to each side of the equation.
-15 + -5m + 7m = 21 + -7m + 7m

Combine like terms: -5m + 7m = 2m
-15 + 2m = 21 + -7m + 7m

Combine like terms: -7m + 7m = 0
-15 + 2m = 21 + 0
-15 + 2m = 21

Add '15' to each side of the equation.
-15 + 15 + 2m = 21 + 15

Combine like terms: -15 + 15 = 0
0 + 2m = 21 + 15
2m = 21 + 15

Combine like terms: 21 + 15 = 36
2m = 36

Divide each side by '2'.
m = 18

Simplifying
m = 18

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