9d-7d-d+2=15

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Solution for 9d-7d-d+2=15 equation: 



9d-7d-d+2=15

We move all terms to the left:

9d-7d-d+2-(15)=0

We add all the numbers together, and all the variables

d-13=0

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

d=13

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