7(m-1)=-7m-21

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Solution for 7(m-1)=-7m-21 equation:


Simplifying
7(m + -1) = -7m + -21

Reorder the terms:
7(-1 + m) = -7m + -21
(-1 * 7 + m * 7) = -7m + -21
(-7 + 7m) = -7m + -21

Reorder the terms:
-7 + 7m = -21 + -7m

Solving
-7 + 7m = -21 + -7m

Solving for variable 'm'.

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

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

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

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

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

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

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

Divide each side by '14'.
m = -1

Simplifying
m = -1

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