Qd=120-210

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Solution for Qd=120-210 equation: 


Simplifying
Qd = 120 + -210

Combine like terms: 120 + -210 = -90
dQ = -90

Solving
dQ = -90

Solving for variable 'd'.

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

Divide each side by 'Q'.
d = -90Q-1

Simplifying
d = -90Q-1

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