3x/(20-x)=20

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Solution for 3x/(20-x)=20 equation: 



3x/(20-x)=20

We move all terms to the left:

3x/(20-x)-(20)=0



Domain of the equation: (20-x)!=0

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

-x!=-20

x!=-20/-1

x!=+20

x∈R



We add all the numbers together, and all the variables

3x/(-1x+20)-20=0

We multiply all the terms by the denominator


3x-20*(-1x+20)=0

We multiply parentheses

3x+20x-400=0

We add all the numbers together, and all the variables

23x-400=0

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

23x=400

x=400/23

x=17+9/23

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