9+5d=d-7

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



9+5d=d-7

We move all terms to the left:

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

We get rid of parentheses

5d-d+7+9=0

We add all the numbers together, and all the variables

4d+16=0

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

4d=-16

d=-16/4

d=-4

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