P+2q=-r

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Solution for P+2q=-r equation: 


Simplifying
P + 2q = -1r

Solving
P + 2q = -1r

Solving for variable 'P'.

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

Add '-2q' to each side of the equation.
P + 2q + -2q = -2q + -1r

Combine like terms: 2q + -2q = 0
P + 0 = -2q + -1r
P = -2q + -1r

Simplifying
P = -2q + -1r

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