2/3d=21

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Solution for 2/3d=21 equation: 



2/3d=21

We move all terms to the left:

2/3d-(21)=0



Domain of the equation: 3d!=0

d!=0/3

d!=0

d∈R



We multiply all the terms by the denominator


-21*3d+2=0

Wy multiply elements

-63d+2=0

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

-63d=-2

d=-2/-63

d=2/63

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