105/d=21

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Solution for 105/d=21 equation: 



105/d=21

We move all terms to the left:

105/d-(21)=0



Domain of the equation: d!=0

d∈R



We multiply all the terms by the denominator


-21*d+105=0

We add all the numbers together, and all the variables

-21d+105=0

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

-21d=-105

d=-105/-21

d=+5

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