3(5+m)=42

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Solution for 3(5+m)=42 equation: 


Simplifying
3(5 + m) = 42
(5 * 3 + m * 3) = 42
(15 + 3m) = 42

Solving
15 + 3m = 42

Solving for variable 'm'.

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

Add '-15' to each side of the equation.
15 + -15 + 3m = 42 + -15

Combine like terms: 15 + -15 = 0
0 + 3m = 42 + -15
3m = 42 + -15

Combine like terms: 42 + -15 = 27
3m = 27

Divide each side by '3'.
m = 9

Simplifying
m = 9

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