-117/r=-9

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Solution for -117/r=-9 equation: 



-117/r=-9

We move all terms to the left:

-117/r-(-9)=0



Domain of the equation: r!=0

r∈R



We add all the numbers together, and all the variables

-117/r+9=0

We multiply all the terms by the denominator


9*r-117=0

We add all the numbers together, and all the variables

9r-117=0

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

9r=117

r=117/9

r=13

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