7d=8d+7

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Solution for 7d=8d+7 equation: 



7d=8d+7

We move all terms to the left:

7d-(8d+7)=0

We get rid of parentheses

7d-8d-7=0

We add all the numbers together, and all the variables

-1d-7=0

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

-d=7

d=7/-1

d=-7

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