-1=3(3r-8)-7

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Solution for -1=3(3r-8)-7 equation: 



-1=3(3r-8)-7

We move all terms to the left:

-1-(3(3r-8)-7)=0



We calculate terms in parentheses: -(3(3r-8)-7), so:

3(3r-8)-7

We multiply parentheses

9r-24-7

We add all the numbers together, and all the variables

9r-31

Back to the equation:

-(9r-31)



We get rid of parentheses

-9r+31-1=0

We add all the numbers together, and all the variables

-9r+30=0

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

-9r=-30

r=-30/-9

r=3+1/3

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