7/d=84/12

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Solution for 7/d=84/12 equation: 



7/d=84/12

We move all terms to the left:

7/d-(84/12)=0



Domain of the equation: d!=0

d∈R



We add all the numbers together, and all the variables

7/d-7=0

We multiply all the terms by the denominator


-7*d+7=0

We add all the numbers together, and all the variables

-7d+7=0

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

-7d=-7

d=-7/-7

d=1

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