2d=9+d

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Solution for 2d=9+d equation: 



2d=9+d

We move all terms to the left:

2d-(9+d)=0

We add all the numbers together, and all the variables

2d-(d+9)=0

We get rid of parentheses

2d-d-9=0

We add all the numbers together, and all the variables

d-9=0

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

d=9

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