12=3m-3(8m+5)

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Solution for 12=3m-3(8m+5) equation:


Simplifying
12 = 3m + -3(8m + 5)

Reorder the terms:
12 = 3m + -3(5 + 8m)
12 = 3m + (5 * -3 + 8m * -3)
12 = 3m + (-15 + -24m)

Reorder the terms:
12 = -15 + 3m + -24m

Combine like terms: 3m + -24m = -21m
12 = -15 + -21m

Solving
12 = -15 + -21m

Solving for variable 'm'.

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

Add '21m' to each side of the equation.
12 + 21m = -15 + -21m + 21m

Combine like terms: -21m + 21m = 0
12 + 21m = -15 + 0
12 + 21m = -15

Add '-12' to each side of the equation.
12 + -12 + 21m = -15 + -12

Combine like terms: 12 + -12 = 0
0 + 21m = -15 + -12
21m = -15 + -12

Combine like terms: -15 + -12 = -27
21m = -27

Divide each side by '21'.
m = -1.285714286

Simplifying
m = -1.285714286

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