8-8-8d=-9d-7

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Solution for 8-8-8d=-9d-7 equation: 



8-8-8d=-9d-7

We move all terms to the left:

8-8-8d-(-9d-7)=0

We add all the numbers together, and all the variables

-8d-(-9d-7)=0

We get rid of parentheses

-8d+9d+7=0

We add all the numbers together, and all the variables

d+7=0

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

d=-7

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