-3(-3r+4)=-66

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Solution for -3(-3r+4)=-66 equation: 



-3(-3r+4)=-66

We move all terms to the left:

-3(-3r+4)-(-66)=0

We add all the numbers together, and all the variables

-3(-3r+4)+66=0

We multiply parentheses

9r-12+66=0

We add all the numbers together, and all the variables

9r+54=0

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

9r=-54

r=-54/9

r=-6

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