The simplest answer is 1 and 16. There are infinitely many pairs.
1/12
2/21
16 / 1 * 1 / 16 = 16 / 16 = 1
7/16 * 4/35 = 1/16 * 4/5 = 1/4 * 1/5 = 1/20
1 x 16, 2 x 8, 4 x 4
These are the pairs of numbers that when multiplied are equal to 64: (1, 64) (2, 32) (4, 16) (8, 8)
1/5 + 1/16 = 21/80
16/-15 * 5/4 =16 5----- * --- =-15 416 1----- * --- =-3 44 1----- * --- =-3 1-1 and 1/3
16
1 & 64, 2 & 32, 4 & 16, or 8 & 8
1 and 1090