P+3r=15

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Solution for P+3r=15 equation: 


Simplifying
P + 3r = 15

Solving
P + 3r = 15

Solving for variable 'P'.

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

Add '-3r' to each side of the equation.
P + 3r + -3r = 15 + -3r

Combine like terms: 3r + -3r = 0
P + 0 = 15 + -3r
P = 15 + -3r

Simplifying
P = 15 + -3r

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