84=-2m-4(-4m+7)

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Solution for 84=-2m-4(-4m+7) equation:


Simplifying
84 = -2m + -4(-4m + 7)

Reorder the terms:
84 = -2m + -4(7 + -4m)
84 = -2m + (7 * -4 + -4m * -4)
84 = -2m + (-28 + 16m)

Reorder the terms:
84 = -28 + -2m + 16m

Combine like terms: -2m + 16m = 14m
84 = -28 + 14m

Solving
84 = -28 + 14m

Solving for variable 'm'.

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

Add '-14m' to each side of the equation.
84 + -14m = -28 + 14m + -14m

Combine like terms: 14m + -14m = 0
84 + -14m = -28 + 0
84 + -14m = -28

Add '-84' to each side of the equation.
84 + -84 + -14m = -28 + -84

Combine like terms: 84 + -84 = 0
0 + -14m = -28 + -84
-14m = -28 + -84

Combine like terms: -28 + -84 = -112
-14m = -112

Divide each side by '-14'.
m = 8

Simplifying
m = 8

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