-1/7d=20

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Solution for -1/7d=20 equation: 



-1/7d=20

We move all terms to the left:

-1/7d-(20)=0



Domain of the equation: 7d!=0

d!=0/7

d!=0

d∈R



We multiply all the terms by the denominator


-20*7d-1=0

Wy multiply elements

-140d-1=0

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

-140d=1

d=1/-140

d=-1/140

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