3/28
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1/3 minus 1/7 is 4/21.
82
We need to convert, and we can do so into fourteenths. One half is 7 fourteenths. One seventh is 2 fourteenths. 7 - 2 = 5, so the answer is 5 fourteenths, which cannot be simplified any further.
Expressed as a proper fraction in its simplest form, 1/6 - 1/7 = 1/42 or one forty-second.
One seventh is approximately 14.29%.