r-8=1+4r

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



r-8=1+4r

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

r-4r-1-8=0

We add all the numbers together, and all the variables

-3r-9=0

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

-3r=9

r=9/-3

r=-3

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