2d+7d+7=-7=7d

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



2d+7d+7=-7=7d

We move all terms to the left:

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

We add all the numbers together, and all the variables

9d+14=0

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

9d=-14

d=-14/9

d=-1+5/9

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