3r+3r=-r

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



3r+3r=-r

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

6r-(-1r)=0

We get rid of parentheses

6r+1r=0

We add all the numbers together, and all the variables

7r=0

r=0/7

r=0

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