P+2r=8

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Solution for P+2r=8 equation: 


Simplifying
P + 2r = 8

Solving
P + 2r = 8

Solving for variable 'P'.

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

Add '-2r' to each side of the equation.
P + 2r + -2r = 8 + -2r

Combine like terms: 2r + -2r = 0
P + 0 = 8 + -2r
P = 8 + -2r

Simplifying
P = 8 + -2r

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