Pd=90-2Qd

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Solution for Pd=90-2Qd equation: 


Simplifying
Pd = 90 + -2Qd

Solving
dP = 90 + -2dQ

Solving for variable 'd'.

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

Add '2dQ' to each side of the equation.
dP + 2dQ = 90 + -2dQ + 2dQ

Combine like terms: -2dQ + 2dQ = 0
dP + 2dQ = 90 + 0
dP + 2dQ = 90

Reorder the terms:
-90 + dP + 2dQ = 90 + -90

Combine like terms: 90 + -90 = 0
-90 + dP + 2dQ = 0

The solution to this equation could not be determined.

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