81/d=9

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Solution for 81/d=9 equation: 



81/d=9

We move all terms to the left:

81/d-(9)=0



Domain of the equation: d!=0

d∈R



We multiply all the terms by the denominator


-9*d+81=0

We add all the numbers together, and all the variables

-9d+81=0

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

-9d=-81

d=-81/-9

d=+9

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