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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

-9d-(-10d+15)+9=0

We get rid of parentheses

-9d+10d-15+9=0

We add all the numbers together, and all the variables

d-6=0

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

d=6

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