-20-3d=20+17d

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Solution for -20-3d=20+17d equation: 



-20-3d=20+17d

We move all terms to the left:

-20-3d-(20+17d)=0

We add all the numbers together, and all the variables

-3d-(17d+20)-20=0

We get rid of parentheses

-3d-17d-20-20=0

We add all the numbers together, and all the variables

-20d-40=0

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

-20d=40

d=40/-20

d=-2

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