M-40=31

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Solution for M-40=31 equation: 


Simplifying
M + -40 = 31

Reorder the terms:
-40 + M = 31

Solving
-40 + M = 31

Solving for variable 'M'.

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

Add '40' to each side of the equation.
-40 + 40 + M = 31 + 40

Combine like terms: -40 + 40 = 0
0 + M = 31 + 40
M = 31 + 40

Combine like terms: 31 + 40 = 71
M = 71

Simplifying
M = 71

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