M-m+2M=90

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Solution for M-m+2M=90 equation: 


Simplifying
M + -1m + 2M = 90

Reorder the terms:
M + 2M + -1m = 90

Combine like terms: M + 2M = 3M
3M + -1m = 90

Solving
3M + -1m = 90

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.
3M + -1m + m = 90 + m

Combine like terms: -1m + m = 0
3M + 0 = 90 + m
3M = 90 + m

Divide each side by '3'.
M = 30 + 0.3333333333m

Simplifying
M = 30 + 0.3333333333m

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