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f(7)=f.
We move all terms to the left:
f(7)-(f.)=0
We add all the numbers together, and all the variables
f7-(+f.)=0
We add all the numbers together, and all the variables
f^7-(+f.)=0
We get rid of parentheses
f^7-f.=0
We do not support efpression: f^7
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