2.1/3.7=(15-x)/x

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Solution for 2.1/3.7=(15-x)/x equation: 



2.1/3.7=(15-x)/x

We move all terms to the left:

2.1/3.7-((15-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+15)/x)+2.1/3.7=0

We calculate fractions


(-((-1x+15)*3.7)/x*3.7)+(2.1*x))/x*3.7)=0



We calculate terms in parentheses: +(-((-1x+15)*3.7)/x*3.7), so:

-((-1x+15)*3.7)/x*3.7

We multiply all the terms by the denominator


-((-1x+15)*3.7)



We calculate terms in parentheses: -((-1x+15)*3.7), so:

(-1x+15)*3.7

We multiply parentheses

-3.7x+55.5

Back to the equation:

-(-3.7x+55.5)



We get rid of parentheses

3.7x-55.5

Back to the equation:

+(3.7x-55.5)



We add all the numbers together, and all the variables

(3.7x-55.5)+(+2.1x))/x*3.7)=0

We get rid of parentheses

3.7x+2.1x))/x*3.7-55.5=0

We multiply all the terms by the denominator


(3.7x)*x*3.7+2.1x))-55.5=0

We add all the numbers together, and all the variables

(+3.7x)*x*3.7+2.1x))-55.5=0

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