-3+2d=-30-7d

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Solution for -3+2d=-30-7d equation: 



-3+2d=-30-7d

We move all terms to the left:

-3+2d-(-30-7d)=0

We add all the numbers together, and all the variables

2d-(-7d-30)-3=0

We get rid of parentheses

2d+7d+30-3=0

We add all the numbers together, and all the variables

9d+27=0

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

9d=-27

d=-27/9

d=-3

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