-84=3(-3m-7)

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Solution for -84=3(-3m-7) equation:


Simplifying
-84 = 3(-3m + -7)

Reorder the terms:
-84 = 3(-7 + -3m)
-84 = (-7 * 3 + -3m * 3)
-84 = (-21 + -9m)

Solving
-84 = -21 + -9m

Solving for variable 'm'.

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

Add '9m' to each side of the equation.
-84 + 9m = -21 + -9m + 9m

Combine like terms: -9m + 9m = 0
-84 + 9m = -21 + 0
-84 + 9m = -21

Add '84' to each side of the equation.
-84 + 84 + 9m = -21 + 84

Combine like terms: -84 + 84 = 0
0 + 9m = -21 + 84
9m = -21 + 84

Combine like terms: -21 + 84 = 63
9m = 63

Divide each side by '9'.
m = 7

Simplifying
m = 7

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