3r+1=6^2-r-3r

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Solution for 3r+1=6^2-r-3r equation: 



3r+1=6^2-r-3r

We move all terms to the left:

3r+1-(6^2-r-3r)=0

We get rid of parentheses

3r+r+3r+1-6^2=0

We add all the numbers together, and all the variables

7r-35=0

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

7r=35

r=35/7

r=5

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