81=-3+7(-m+4)

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Solution for 81=-3+7(-m+4) equation:


Simplifying
81 = -3 + 7(-1m + 4)

Reorder the terms:
81 = -3 + 7(4 + -1m)
81 = -3 + (4 * 7 + -1m * 7)
81 = -3 + (28 + -7m)

Combine like terms: -3 + 28 = 25
81 = 25 + -7m

Solving
81 = 25 + -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.
81 + 7m = 25 + -7m + 7m

Combine like terms: -7m + 7m = 0
81 + 7m = 25 + 0
81 + 7m = 25

Add '-81' to each side of the equation.
81 + -81 + 7m = 25 + -81

Combine like terms: 81 + -81 = 0
0 + 7m = 25 + -81
7m = 25 + -81

Combine like terms: 25 + -81 = -56
7m = -56

Divide each side by '7'.
m = -8

Simplifying
m = -8

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