5(3+m)=21

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Solution for 5(3+m)=21 equation: 


Simplifying
5(3 + m) = 21
(3 * 5 + m * 5) = 21
(15 + 5m) = 21

Solving
15 + 5m = 21

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 + 5m = 21 + -15

Combine like terms: 15 + -15 = 0
0 + 5m = 21 + -15
5m = 21 + -15

Combine like terms: 21 + -15 = 6
5m = 6

Divide each side by '5'.
m = 1.2

Simplifying
m = 1.2

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