15-9r=36

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Solution for 15-9r=36 equation: 



15-9r=36

We move all terms to the left:

15-9r-(36)=0

We add all the numbers together, and all the variables

-9r-21=0

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

-9r=21

r=21/-9

r=-2+1/3

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