30/100=90/x

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Solution for 30/100=90/x equation: 



30/100=90/x

We move all terms to the left:

30/100-(90/x)=0



Domain of the equation: x)!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

-(+90/x)+30/100=0

We get rid of parentheses

-90/x+30/100=0

We calculate fractions

There is no solution for this equation

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