-9-7d=-10-8d

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Solution for -9-7d=-10-8d equation: 



-9-7d=-10-8d

We move all terms to the left:

-9-7d-(-10-8d)=0

We add all the numbers together, and all the variables

-7d-(-8d-10)-9=0

We get rid of parentheses

-7d+8d+10-9=0

We add all the numbers together, and all the variables

d+1=0

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

d=-1

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