r(1+2)=3r

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Solution for r(1+2)=3r equation: 



r(1+2)=3r

We move all terms to the left:

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

We add all the numbers together, and all the variables

r3-3r=0

We add all the numbers together, and all the variables

r^3-3r=0

We do not support erpression: r^3

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