2r+r-1=6+2

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Solution for 2r+r-1=6+2 equation: 



2r+r-1=6+2

We move all terms to the left:

2r+r-1-(6+2)=0

We add all the numbers together, and all the variables

2r+r-1-8=0

We add all the numbers together, and all the variables

3r-9=0

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

3r=9

r=9/3

r=3

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