7(5+m)=21

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Solution for 7(5+m)=21 equation: 


Simplifying
7(5 + m) = 21
(5 * 7 + m * 7) = 21
(35 + 7m) = 21

Solving
35 + 7m = 21

Solving for variable 'm'.

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

Add '-35' to each side of the equation.
35 + -35 + 7m = 21 + -35

Combine like terms: 35 + -35 = 0
0 + 7m = 21 + -35
7m = 21 + -35

Combine like terms: 21 + -35 = -14
7m = -14

Divide each side by '7'.
m = -2

Simplifying
m = -2

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