3d-8=21

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Solution for 3d-8=21 equation: 



3d-8=21

We move all terms to the left:

3d-8-(21)=0

We add all the numbers together, and all the variables

3d-29=0

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

3d=29

d=29/3

d=9+2/3

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