f(20)=-1/4*20+16

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Solution for f(20)=-1/4*20+16 equation: 



f(20)=-1/4*20+16

We move all terms to the left:

f(20)-(-1/4*20+16)=0

We add all the numbers together, and all the variables

f^20-(-1/4*20+16)=0

We get rid of parentheses

f^20-16+1/4*20=0

We multiply all the terms by the denominator


f^20*4*20+1-16*4*20=0

We do not support efpression: f^20

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