-2d-7-2d=9

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Solution for -2d-7-2d=9 equation: 



-2d-7-2d=9

We move all terms to the left:

-2d-7-2d-(9)=0

We add all the numbers together, and all the variables

-4d-16=0

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

-4d=16

d=16/-4

d=-4

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