r-9=8r-5

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Solution for r-9=8r-5 equation: 



r-9=8r-5

We move all terms to the left:

r-9-(8r-5)=0

We get rid of parentheses

r-8r+5-9=0

We add all the numbers together, and all the variables

-7r-4=0

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

-7r=4

r=4/-7

r=-4/7

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