0.4=3/x

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Solution for 0.4=3/x equation: 



0.4=3/x

We move all terms to the left:

0.4-(3/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

-(+3/x)+0.4=0

We get rid of parentheses

-3/x+0.4=0

We multiply all the terms by the denominator


(0.4)*x-3=0

We multiply parentheses

0.4x-3=0

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

0.4x=3

x=3/0.4

x=7+0.2/0.4

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