9/r=13

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Solution for 9/r=13 equation: 



9/r=13

We move all terms to the left:

9/r-(13)=0



Domain of the equation: r!=0

r∈R



We multiply all the terms by the denominator


-13*r+9=0

We add all the numbers together, and all the variables

-13r+9=0

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

-13r=-9

r=-9/-13

r=9/13

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