18=f-2

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Solution for 18=f-2 equation: 



18=f-2

We move all terms to the left:

18-(f-2)=0

We get rid of parentheses

-f+2+18=0

We add all the numbers together, and all the variables

-1f+20=0

We move all terms containing f to the left, all other terms to the right

-f=-20

f=-20/-1

f=+20

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