8.4/x=2.1/4.2

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Solution for 8.4/x=2.1/4.2 equation: 



8.4/x=2.1/4.2

We move all terms to the left:

8.4/x-(2.1/4.2)=0



Domain of the equation: x!=0

x∈R



We add all the numbers together, and all the variables

8.4/x-(+2.1/4.2)=0

We get rid of parentheses

8.4/x-2.1/4.2=0

We calculate fractions

There is no solution for this equation

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