7(2-m)=21

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Solution for 7(2-m)=21 equation: 


Simplifying
7(2 + -1m) = 21
(2 * 7 + -1m * 7) = 21
(14 + -7m) = 21

Solving
14 + -7m = 21

Solving for variable 'm'.

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

Add '-14' to each side of the equation.
14 + -14 + -7m = 21 + -14

Combine like terms: 14 + -14 = 0
0 + -7m = 21 + -14
-7m = 21 + -14

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

Divide each side by '-7'.
m = -1

Simplifying
m = -1

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