-4(9-3r)=0

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Solution for -4(9-3r)=0 equation: 



-4(9-3r)=0

We add all the numbers together, and all the variables

-4(-3r+9)=0

We multiply parentheses

12r-36=0

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

12r=36

r=36/12

r=3

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