-3/4d=-21

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Solution for -3/4d=-21 equation: 



-3/4d=-21

We move all terms to the left:

-3/4d-(-21)=0



Domain of the equation: 4d!=0

d!=0/4

d!=0

d∈R



We add all the numbers together, and all the variables

-3/4d+21=0

We multiply all the terms by the denominator


21*4d-3=0

Wy multiply elements

84d-3=0

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

84d=3

d=3/84

d=1/28

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