7d+6=-15

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Solution for 7d+6=-15 equation: 



7d+6=-15

We move all terms to the left:

7d+6-(-15)=0

We add all the numbers together, and all the variables

7d+21=0

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

7d=-21

d=-21/7

d=-3

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