12-7=m

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Solution for 12-7=m equation:


Simplifying
12 + -7 = m

Combine like terms: 12 + -7 = 5
5 = m

Solving
5 = m

Solving for variable 'm'.

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

Add '-1m' to each side of the equation.
5 + -1m = m + -1m

Combine like terms: m + -1m = 0
5 + -1m = 0

Add '-5' to each side of the equation.
5 + -5 + -1m = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -1m = 0 + -5
-1m = 0 + -5

Combine like terms: 0 + -5 = -5
-1m = -5

Divide each side by '-1'.
m = 5

Simplifying
m = 5

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