Qd=120-2*50

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Solution for Qd=120-2*50 equation: 


Simplifying
Qd = 120 + -2 * 50

Multiply -2 * 50
dQ = 120 + -100

Combine like terms: 120 + -100 = 20
dQ = 20

Solving
dQ = 20

Solving for variable 'd'.

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

Divide each side by 'Q'.
d = 20Q-1

Simplifying
d = 20Q-1

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