20d-4d-12d-2d-1=3

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Solution for 20d-4d-12d-2d-1=3 equation: 



20d-4d-12d-2d-1=3

We move all terms to the left:

20d-4d-12d-2d-1-(3)=0

We add all the numbers together, and all the variables

2d-4=0

We move all terms containing d to the left, all other terms to the right

2d=4

d=4/2

d=2

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