7+2d=9-2d

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



7+2d=9-2d

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

2d+2d-9+7=0

We add all the numbers together, and all the variables

4d-2=0

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

4d=2

d=2/4

d=1/2

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