-8r-72-7=9

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Solution for -8r-72-7=9 equation: 



-8r-72-7=9

We move all terms to the left:

-8r-72-7-(9)=0

We add all the numbers together, and all the variables

-8r-88=0

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

-8r=88

r=88/-8

r=-11

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