20=4.75/r

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Solution for 20=4.75/r equation: 



20=4.75/r

We move all terms to the left:

20-(4.75/r)=0



Domain of the equation: r)!=0

r!=0/1

r!=0

r∈R



We add all the numbers together, and all the variables

-(+4.75/r)+20=0

We get rid of parentheses

-4.75/r+20=0

We multiply all the terms by the denominator


20*r-4.75=0

We add all the numbers together, and all the variables

20r-4.75=0

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

20r=4.75

r=4.75/20

r=1/4.21052631579

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