-7(8+5m)=-21

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Solution for -7(8+5m)=-21 equation: 


Simplifying
-7(8 + 5m) = -21
(8 * -7 + 5m * -7) = -21
(-56 + -35m) = -21

Solving
-56 + -35m = -21

Solving for variable 'm'.

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

Add '56' to each side of the equation.
-56 + 56 + -35m = -21 + 56

Combine like terms: -56 + 56 = 0
0 + -35m = -21 + 56
-35m = -21 + 56

Combine like terms: -21 + 56 = 35
-35m = 35

Divide each side by '-35'.
m = -1

Simplifying
m = -1

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