-2d+3+7d=-12

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Solution for -2d+3+7d=-12 equation: 



-2d+3+7d=-12

We move all terms to the left:

-2d+3+7d-(-12)=0

We add all the numbers together, and all the variables

5d+15=0

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

5d=-15

d=-15/5

d=-3

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