2+7d+7=9+8d

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Solution for 2+7d+7=9+8d equation: 



2+7d+7=9+8d

We move all terms to the left:

2+7d+7-(9+8d)=0

We add all the numbers together, and all the variables

7d-(8d+9)+2+7=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

7d-8d-9+9=0

We add all the numbers together, and all the variables

-d=0

d=0/-1

d=0

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