3r+3r-r-4=6

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Solution for 3r+3r-r-4=6 equation: 



3r+3r-r-4=6

We move all terms to the left:

3r+3r-r-4-(6)=0

We add all the numbers together, and all the variables

5r-10=0

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

5r=10

r=10/5

r=2

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