9r-4=-64

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Solution for 9r-4=-64 equation: 



9r-4=-64

We move all terms to the left:

9r-4-(-64)=0

We add all the numbers together, and all the variables

9r+60=0

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

9r=-60

r=-60/9

r=-6+2/3

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