7d+20-3D=-8

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Solution for 7d+20-3D=-8 equation: 



7d+20-3=-8

We move all terms to the left:

7d+20-3-(-8)=0

We add all the numbers together, and all the variables

7d+25=0

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

7d=-25

d=-25/7

d=-3+4/7

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