2=20/r

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Solution for 2=20/r equation: 



2=20/r

We move all terms to the left:

2-(20/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

-(+20/r)+2=0

We get rid of parentheses

-20/r+2=0

We multiply all the terms by the denominator


2*r-20=0

We add all the numbers together, and all the variables

2r-20=0

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

2r=20

r=20/2

r=10

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