The reciprocal of a fraction is the same fraction flip-flopped. So the numerator becomes the denominator, and the denominator becomes the denominator. So for seven over thirty one, the reciprocal is thirty one over seven
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eight over thirty one
2.7%
Expressed as a proper fraction in its simplest form, (6 1/7)-1 = 7/43 or seven forty-thirds.
One hundred thirty-seven
-3/22