3D-d+3D+5d=20

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Solution for 3D-d+3D+5d=20 equation: 



3-D+3+5D=20

We move all terms to the left:

3-D+3+5D-(20)=0

We add all the numbers together, and all the variables

4D-14=0

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

4D=14

D=14/4

D=3+1/2

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