M-2m-3=12

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Solution for M-2m-3=12 equation:


Simplifying
M + -2m + -3 = 12

Reorder the terms:
-3 + M + -2m = 12

Solving
-3 + M + -2m = 12

Solving for variable 'M'.

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

Add '3' to each side of the equation.
-3 + M + 3 + -2m = 12 + 3

Reorder the terms:
-3 + 3 + M + -2m = 12 + 3

Combine like terms: -3 + 3 = 0
0 + M + -2m = 12 + 3
M + -2m = 12 + 3

Combine like terms: 12 + 3 = 15
M + -2m = 15

Add '2m' to each side of the equation.
M + -2m + 2m = 15 + 2m

Combine like terms: -2m + 2m = 0
M + 0 = 15 + 2m
M = 15 + 2m

Simplifying
M = 15 + 2m

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