5d+7d=-31

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Solution for 5d+7d=-31 equation: 



5d+7d=-31

We move all terms to the left:

5d+7d-(-31)=0

We add all the numbers together, and all the variables

12d+31=0

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

12d=-31

d=-31/12

d=-2+7/12

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