-1+4r=r+8

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



-1+4r=r+8

We move all terms to the left:

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

We get rid of parentheses

4r-r-8-1=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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