9r-7+8r+6=90

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Solution for 9r-7+8r+6=90 equation: 



9r-7+8r+6=90

We move all terms to the left:

9r-7+8r+6-(90)=0

We add all the numbers together, and all the variables

17r-91=0

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

17r=91

r=91/17

r=5+6/17

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