-9+8r=-r+3(1+5r)

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Solution for -9+8r=-r+3(1+5r) equation: 



-9+8r=-r+3(1+5r)

We move all terms to the left:

-9+8r-(-r+3(1+5r))=0

We add all the numbers together, and all the variables

8r-(-r+3(5r+1))-9=0



We calculate terms in parentheses: -(-r+3(5r+1)), so:

-r+3(5r+1)

We add all the numbers together, and all the variables

-1r+3(5r+1)

We multiply parentheses

-1r+15r+3

We add all the numbers together, and all the variables

14r+3

Back to the equation:

-(14r+3)



We get rid of parentheses

8r-14r-3-9=0

We add all the numbers together, and all the variables

-6r-12=0

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

-6r=12

r=12/-6

r=-2

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