13=3/r+11

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Solution for 13=3/r+11 equation: 



13=3/r+11

We move all terms to the left:

13-(3/r+11)=0



Domain of the equation: r+11)!=0

r∈R



We get rid of parentheses

-3/r-11+13=0

We multiply all the terms by the denominator


-11*r+13*r-3=0

We add all the numbers together, and all the variables

2r-3=0

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

2r=3

r=3/2

r=1+1/2

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