125/5=400/x

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Solution for 125/5=400/x equation: 



125/5=400/x

We move all terms to the left:

125/5-(400/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

-(+400/x)+125/5=0

We add all the numbers together, and all the variables

-(+400/x)+25=0

We get rid of parentheses

-400/x+25=0

We multiply all the terms by the denominator


25*x-400=0

We add all the numbers together, and all the variables

25x-400=0

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

25x=400

x=400/25

x=16

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