-15m+9m=18-42

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Solution for -15m+9m=18-42 equation: 


Simplifying
-15m + 9m = 18 + -42

Combine like terms: -15m + 9m = -6m
-6m = 18 + -42

Combine like terms: 18 + -42 = -24
-6m = -24

Solving
-6m = -24

Solving for variable 'm'.

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

Divide each side by '-6'.
m = 4

Simplifying
m = 4

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