-9r=-72

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Solution for -9r=-72 equation: 



-9r=-72

We move all terms to the left:

-9r-(-72)=0

We add all the numbers together, and all the variables

-9r+72=0

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

-9r=-72

r=-72/-9

r=+8

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