-9r+-128=-686

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Solution for -9r+-128=-686 equation: 



-9r+-128=-686

We move all terms to the left:

-9r+-128-(-686)=0

We add all the numbers together, and all the variables

-9r+558=0

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

-9r=-558

r=-558/-9

r=+62

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