Qpr=90

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Solution for Qpr=90 equation: 


Simplifying
Qpr = 90

Solving
prQ = 90

Solving for variable 'p'.

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

Divide each side by 'rQ'.
p = 90r-1Q-1

Simplifying
p = 90r-1Q-1

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