8r+5+5r+6=90

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Solution for 8r+5+5r+6=90 equation: 



8r+5+5r+6=90

We move all terms to the left:

8r+5+5r+6-(90)=0

We add all the numbers together, and all the variables

13r-79=0

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

13r=79

r=79/13

r=6+1/13

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