400=80/x

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Solution for 400=80/x equation: 



400=80/x

We move all terms to the left:

400-(80/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

-(+80/x)+400=0

We get rid of parentheses

-80/x+400=0

We multiply all the terms by the denominator


400*x-80=0

We add all the numbers together, and all the variables

400x-80=0

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

400x=80

x=80/400

x=1/5

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