-2(-1-3r)-3(3+3r)=-1

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Solution for -2(-1-3r)-3(3+3r)=-1 equation: 



-2(-1-3r)-3(3+3r)=-1

We move all terms to the left:

-2(-1-3r)-3(3+3r)-(-1)=0

We add all the numbers together, and all the variables

-2(-3r-1)-3(3r+3)-(-1)=0

We add all the numbers together, and all the variables

-2(-3r-1)-3(3r+3)+1=0

We multiply parentheses

6r-9r+2-9+1=0

We add all the numbers together, and all the variables

-3r-6=0

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

-3r=6

r=6/-3

r=-2

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