-2(-3-9r)=-78-6

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Solution for -2(-3-9r)=-78-6 equation: 



-2(-3-9r)=-78-6

We move all terms to the left:

-2(-3-9r)-(-78-6)=0

We add all the numbers together, and all the variables

-2(-9r-3)-(-84)=0

We add all the numbers together, and all the variables

-2(-9r-3)+84=0

We multiply parentheses

18r+6+84=0

We add all the numbers together, and all the variables

18r+90=0

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

18r=-90

r=-90/18

r=-5

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