-3(m-1)+9=15

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Solution for -3(m-1)+9=15 equation:


Simplifying
-3(m + -1) + 9 = 15

Reorder the terms:
-3(-1 + m) + 9 = 15
(-1 * -3 + m * -3) + 9 = 15
(3 + -3m) + 9 = 15

Reorder the terms:
3 + 9 + -3m = 15

Combine like terms: 3 + 9 = 12
12 + -3m = 15

Solving
12 + -3m = 15

Solving for variable 'm'.

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

Add '-12' to each side of the equation.
12 + -12 + -3m = 15 + -12

Combine like terms: 12 + -12 = 0
0 + -3m = 15 + -12
-3m = 15 + -12

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

Divide each side by '-3'.
m = -1

Simplifying
m = -1

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