21/n=2

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Solution for 21/n=2 equation: 



21/n=2

We move all terms to the left:

21/n-(2)=0



Domain of the equation: n!=0

n∈R



We multiply all the terms by the denominator


-2*n+21=0

We add all the numbers together, and all the variables

-2n+21=0

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

-2n=-21

n=-21/-2

n=10+1/2

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