7/x=3/21

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Solution for 7/x=3/21 equation: 



7/x=3/21

We move all terms to the left:

7/x-(3/21)=0



Domain of the equation: x!=0

x∈R



We add all the numbers together, and all the variables

7/x-(+3/21)=0

We get rid of parentheses

7/x-3/21=0

We calculate fractions

There is no solution for this equation

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