12=r3+9

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Solution for 12=r3+9 equation: 



12=r3+9

We move all terms to the left:

12-(r3+9)=0

We add all the numbers together, and all the variables

-(+r^3+9)+12=0

We get rid of parentheses

-r^3-9+12=0

We do not support erpression: r^3

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