2d-9=2+9-2d

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Solution for 2d-9=2+9-2d equation: 



2d-9=2+9-2d

We move all terms to the left:

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

We add all the numbers together, and all the variables

2d-(-2d+11)-9=0

We get rid of parentheses

2d+2d-11-9=0

We add all the numbers together, and all the variables

4d-20=0

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

4d=20

d=20/4

d=5

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