-9d+20=28+3d

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Solution for -9d+20=28+3d equation: 



-9d+20=28+3d

We move all terms to the left:

-9d+20-(28+3d)=0

We add all the numbers together, and all the variables

-9d-(3d+28)+20=0

We get rid of parentheses

-9d-3d-28+20=0

We add all the numbers together, and all the variables

-12d-8=0

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

-12d=8

d=8/-12

d=-2/3

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