-1=1+r/8

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Solution for -1=1+r/8 equation: 



-1=1+r/8

We move all terms to the left:

-1-(1+r/8)=0

We add all the numbers together, and all the variables

-(r/8+1)-1=0

We get rid of parentheses

-r/8-1-1=0

We multiply all the terms by the denominator


-r-1*8-1*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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