7d=15-3d

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Solution for 7d=15-3d equation: 



7d=15-3d

We move all terms to the left:

7d-(15-3d)=0

We add all the numbers together, and all the variables

7d-(-3d+15)=0

We get rid of parentheses

7d+3d-15=0

We add all the numbers together, and all the variables

10d-15=0

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

10d=15

d=15/10

d=1+1/2

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