0,2=(40-x)/x

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Solution for 0,2=(40-x)/x equation: 



0.2=(40-x)/x

We move all terms to the left:

0.2-((40-x)/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

-((-1x+40)/x)+0.2=0

We multiply all the terms by the denominator


-((-1x+40)+(0.2)*x)=0



We calculate terms in parentheses: -((-1x+40)+(0.2)*x), so:

(-1x+40)+(0.2)*x

We multiply parentheses

(-1x+40)+0.2x

We get rid of parentheses

-1x+0.2x+40

We add all the numbers together, and all the variables

-0.8x+40

Back to the equation:

-(-0.8x+40)



We get rid of parentheses

0.8x-40=0

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

0.8x=40

x=40/0.8

x=50

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