20+7d=5d+15

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Solution for 20+7d=5d+15 equation: 



20+7d=5d+15

We move all terms to the left:

20+7d-(5d+15)=0

We get rid of parentheses

7d-5d-15+20=0

We add all the numbers together, and all the variables

2d+5=0

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

2d=-5

d=-5/2

d=-2+1/2

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