9r+20=65

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Solution for 9r+20=65 equation: 



9r+20=65

We move all terms to the left:

9r+20-(65)=0

We add all the numbers together, and all the variables

9r-45=0

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

9r=45

r=45/9

r=5

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