3r-r-1=11

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Solution for 3r-r-1=11 equation: 



3r-r-1=11

We move all terms to the left:

3r-r-1-(11)=0

We add all the numbers together, and all the variables

2r-12=0

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

2r=12

r=12/2

r=6

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