-2d-3=9+2d

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Solution for -2d-3=9+2d equation: 



-2d-3=9+2d

We move all terms to the left:

-2d-3-(9+2d)=0

We add all the numbers together, and all the variables

-2d-(2d+9)-3=0

We get rid of parentheses

-2d-2d-9-3=0

We add all the numbers together, and all the variables

-4d-12=0

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

-4d=12

d=12/-4

d=-3

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