15/20=9r

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Solution for 15/20=9r equation: 



15/20=9r

We move all terms to the left:

15/20-(9r)=0

We multiply all the terms by the denominator


-9r*20+15=0

Wy multiply elements

-180r+15=0

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

-180r=-15

r=-15/-180

r=1/12

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