5-8r-r-4=-1r

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Solution for 5-8r-r-4=-1r equation: 



5-8r-r-4=-1r

We move all terms to the left:

5-8r-r-4-(-1r)=0

We add all the numbers together, and all the variables

-9r-(-1r)+1=0

We get rid of parentheses

-9r+1r+1=0

We add all the numbers together, and all the variables

-8r+1=0

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

-8r=-1

r=-1/-8

r=1/8

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