P+m+n=12

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Solution for P+m+n=12 equation: 


Simplifying
P + m + n = 12

Solving
P + m + n = 12

Solving for variable 'P'.

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

Add '-1m' to each side of the equation.
P + m + -1m + n = 12 + -1m

Combine like terms: m + -1m = 0
P + 0 + n = 12 + -1m
P + n = 12 + -1m

Add '-1n' to each side of the equation.
P + n + -1n = 12 + -1m + -1n

Combine like terms: n + -1n = 0
P + 0 = 12 + -1m + -1n
P = 12 + -1m + -1n

Simplifying
P = 12 + -1m + -1n

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