3-(12-m)=-1(m-8)

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Solution for 3-(12-m)=-1(m-8) equation:


Simplifying
3 + -1(12 + -1m) = -1(m + -8)
3 + (12 * -1 + -1m * -1) = -1(m + -8)
3 + (-12 + 1m) = -1(m + -8)

Combine like terms: 3 + -12 = -9
-9 + 1m = -1(m + -8)

Reorder the terms:
-9 + 1m = -1(-8 + m)
-9 + 1m = (-8 * -1 + m * -1)
-9 + 1m = (8 + -1m)

Solving
-9 + 1m = 8 + -1m

Solving for variable 'm'.

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

Add 'm' to each side of the equation.
-9 + 1m + m = 8 + -1m + m

Combine like terms: 1m + m = 2m
-9 + 2m = 8 + -1m + m

Combine like terms: -1m + m = 0
-9 + 2m = 8 + 0
-9 + 2m = 8

Add '9' to each side of the equation.
-9 + 9 + 2m = 8 + 9

Combine like terms: -9 + 9 = 0
0 + 2m = 8 + 9
2m = 8 + 9

Combine like terms: 8 + 9 = 17
2m = 17

Divide each side by '2'.
m = 8.5

Simplifying
m = 8.5

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