12m-8-7m=42

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Solution for 12m-8-7m=42 equation:


Simplifying
12m + -8 + -7m = 42

Reorder the terms:
-8 + 12m + -7m = 42

Combine like terms: 12m + -7m = 5m
-8 + 5m = 42

Solving
-8 + 5m = 42

Solving for variable 'm'.

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

Add '8' to each side of the equation.
-8 + 8 + 5m = 42 + 8

Combine like terms: -8 + 8 = 0
0 + 5m = 42 + 8
5m = 42 + 8

Combine like terms: 42 + 8 = 50
5m = 50

Divide each side by '5'.
m = 10

Simplifying
m = 10

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