7d-7=2d+15.5

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Solution for 7d-7=2d+15.5 equation: 



7d-7=2d+15.5

We move all terms to the left:

7d-7-(2d+15.5)=0

We get rid of parentheses

7d-2d-15.5-7=0

We add all the numbers together, and all the variables

5d-22.5=0

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

5d=22.5

d=22.5/5

d=4+2.5/5

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