9+7d=5d-7

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Solution for 9+7d=5d-7 equation: 



9+7d=5d-7

We move all terms to the left:

9+7d-(5d-7)=0

We get rid of parentheses

7d-5d+7+9=0

We add all the numbers together, and all the variables

2d+16=0

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

2d=-16

d=-16/2

d=-8

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