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6.5r-1=269
We move all terms to the left:
6.5r-1-(269)=0
We add all the numbers together, and all the variables
6.5r-270=0
We move all terms containing r to the left, all other terms to the right
6.5r=270
r=270/6.5
r=41+1/1.8571428571429
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