-3(2r-1)=15

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Solution for -3(2r-1)=15 equation: 



-3(2r-1)=15

We move all terms to the left:

-3(2r-1)-(15)=0

We multiply parentheses

-6r+3-15=0

We add all the numbers together, and all the variables

-6r-12=0

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

-6r=12

r=12/-6

r=-2

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