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9=r4+r/411
We move all terms to the left:
9-(r4+r/411)=0
We add all the numbers together, and all the variables
-(+r^4+r/411)+9=0
We get rid of parentheses
-r^4-r/411+9=0
We multiply all the terms by the denominator
-r^4*411-r+9*411=0
We do not support erpression: r^4
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