3D+6d+12=30

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Solution for 3D+6d+12=30 equation: 



3+6D+12=30

We move all terms to the left:

3+6D+12-(30)=0

We add all the numbers together, and all the variables

6D-15=0

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

6D=15

D=15/6

D=2+1/2

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