5r-r-9=15

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Solution for 5r-r-9=15 equation: 



5r-r-9=15

We move all terms to the left:

5r-r-9-(15)=0

We add all the numbers together, and all the variables

4r-24=0

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

4r=24

r=24/4

r=6

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