M+2=21

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Solution for M+2=21 equation: 


Simplifying
M + 2 = 21

Reorder the terms:
2 + M = 21

Solving
2 + M = 21

Solving for variable 'M'.

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

Add '-2' to each side of the equation.
2 + -2 + M = 21 + -2

Combine like terms: 2 + -2 = 0
0 + M = 21 + -2
M = 21 + -2

Combine like terms: 21 + -2 = 19
M = 19

Simplifying
M = 19

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