13m+8m=42

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Solution for 13m+8m=42 equation: 


Simplifying
13m + 8m = 42

Combine like terms: 13m + 8m = 21m
21m = 42

Solving
21m = 42

Solving for variable 'm'.

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

Divide each side by '21'.
m = 2

Simplifying
m = 2

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