11=9+r/8

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Solution for 11=9+r/8 equation: 



11=9+r/8

We move all terms to the left:

11-(9+r/8)=0

We add all the numbers together, and all the variables

-(r/8+9)+11=0

We get rid of parentheses

-r/8-9+11=0

We multiply all the terms by the denominator


-r-9*8+11*8=0

We add all the numbers together, and all the variables

-1r+16=0

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

-r=-16

r=-16/-1

r=+16

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