12r-17=-89

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Solution for 12r-17=-89 equation: 



12r-17=-89

We move all terms to the left:

12r-17-(-89)=0

We add all the numbers together, and all the variables

12r+72=0

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

12r=-72

r=-72/12

r=-6

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