4=x/(10-x)

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Solution for 4=x/(10-x) equation: 



4=x/(10-x)

We move all terms to the left:

4-(x/(10-x))=0



Domain of the equation: (10-x))!=0

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

-x)!=-10

x!=-10/1

x!=-10

x∈R



We add all the numbers together, and all the variables

-(x/(-1x+10))+4=0

We multiply all the terms by the denominator


-(x+4*(-1x+10))=0



We calculate terms in parentheses: -(x+4*(-1x+10)), so:

x+4*(-1x+10)

We multiply parentheses

x-4x+40

We add all the numbers together, and all the variables

-3x+40

Back to the equation:

-(-3x+40)



We get rid of parentheses

3x-40=0

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

3x=40

x=40/3

x=13+1/3

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