5d+7d=-12

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Solution for 5d+7d=-12 equation: 



5d+7d=-12

We move all terms to the left:

5d+7d-(-12)=0

We add all the numbers together, and all the variables

12d+12=0

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

12d=-12

d=-12/12

d=-1

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