Do you mean three and one fifth (3 1/5)?
If so, convert the mixed number to an improper fraction and then turn it upside down:
3 1/5 = 16/5
=> reciprocal of 3 1/5 = 5/16.
If you mean thirty one fifths (31/5), just turn it upside down => 5/31.
three over one
5/21
eight over thirty one
The reciprocal is a flipped fraction, 3 is 3 over 1, so, The reciprocal of 3 is 1 over 3, which is one third.
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
three over one
5/21
eight over thirty one
5 over 55
to find the reciprocal you would want to make 2 3/4 an impropper fraction. To do that you need to multiply the whole number by the denominator. In this case the 2 by the 4. From that you get 8. Then you add that number to the numerator. So it would be 8+3=11. Put this number over 4 and you have 11/4. Then you can find the reciprocal which would be that number upside down. Your reciprocal is 4/11.
five ninths
14/15
There is no meaningful question in "three over five y plus one over nine". There cannot, therefore, be an answer.
The reciprocal of 3/10 is 10/3 or 3 1/3 (that is, three and one third).
Yes, one-thirds equals five fifteenths.
The reciprocal of two thirds is three halves - which is one and a half (1.5).
4