-7(m-3)-8m=-84

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Solution for -7(m-3)-8m=-84 equation:


Simplifying
-7(m + -3) + -8m = -84

Reorder the terms:
-7(-3 + m) + -8m = -84
(-3 * -7 + m * -7) + -8m = -84
(21 + -7m) + -8m = -84

Combine like terms: -7m + -8m = -15m
21 + -15m = -84

Solving
21 + -15m = -84

Solving for variable 'm'.

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

Add '-21' to each side of the equation.
21 + -21 + -15m = -84 + -21

Combine like terms: 21 + -21 = 0
0 + -15m = -84 + -21
-15m = -84 + -21

Combine like terms: -84 + -21 = -105
-15m = -105

Divide each side by '-15'.
m = 7

Simplifying
m = 7

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