42=8m+13m

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Solution for 42=8m+13m equation:


Simplifying
42 = 8m + 13m

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

Solving
42 = 21m

Solving for variable 'm'.

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

Add '-21m' to each side of the equation.
42 + -21m = 21m + -21m

Combine like terms: 21m + -21m = 0
42 + -21m = 0

Add '-42' to each side of the equation.
42 + -42 + -21m = 0 + -42

Combine like terms: 42 + -42 = 0
0 + -21m = 0 + -42
-21m = 0 + -42

Combine like terms: 0 + -42 = -42
-21m = -42

Divide each side by '-21'.
m = 2

Simplifying
m = 2

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