-2d-9=d+30

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Solution for -2d-9=d+30 equation: 



-2d-9=d+30

We move all terms to the left:

-2d-9-(d+30)=0

We get rid of parentheses

-2d-d-30-9=0

We add all the numbers together, and all the variables

-3d-39=0

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

-3d=39

d=39/-3

d=-13

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