5,8=21/x

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Solution for 5,8=21/x equation: 



5.8=21/x

We move all terms to the left:

5.8-(21/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

-(+21/x)+5.8=0

We get rid of parentheses

-21/x+5.8=0

We multiply all the terms by the denominator


(5.8)*x-21=0

We multiply parentheses

5.8x-21=0

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

5.8x=21

x=21/5.8

x=3+2.25/3.625

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