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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

16d-(7d+9)-9=0

We get rid of parentheses

16d-7d-9-9=0

We add all the numbers together, and all the variables

9d-18=0

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

9d=18

d=18/9

d=2

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