-23=8r+1+4r

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Solution for -23=8r+1+4r equation: 



-23=8r+1+4r

We move all terms to the left:

-23-(8r+1+4r)=0

We add all the numbers together, and all the variables

-(12r+1)-23=0

We get rid of parentheses

-12r-1-23=0

We add all the numbers together, and all the variables

-12r-24=0

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

-12r=24

r=24/-12

r=-2

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