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f(12)=2/3+3
We move all terms to the left:
f(12)-(2/3+3)=0
We add all the numbers together, and all the variables
f^12-(2/3+3)=0
We get rid of parentheses
f^12-3-2/3=0
We multiply all the terms by the denominator
f^12*3-2-3*3=0
We do not support efpression: f^12
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