84/d=7

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Solution for 84/d=7 equation: 



84/d=7

We move all terms to the left:

84/d-(7)=0



Domain of the equation: d!=0

d∈R



We multiply all the terms by the denominator


-7*d+84=0

We add all the numbers together, and all the variables

-7d+84=0

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

-7d=-84

d=-84/-7

d=+12

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