9r+5=85-r

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Solution for 9r+5=85-r equation: 



9r+5=85-r

We move all terms to the left:

9r+5-(85-r)=0

We add all the numbers together, and all the variables

9r-(-1r+85)+5=0

We get rid of parentheses

9r+1r-85+5=0

We add all the numbers together, and all the variables

10r-80=0

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

10r=80

r=80/10

r=8

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