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

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



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

We move all terms to the left:

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

We get rid of parentheses

7r+8r+6-8-90=0

We add all the numbers together, and all the variables

15r-92=0

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

15r=92

r=92/15

r=6+2/15

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