3 out of 5 * 6 out of 1 * 7 out of 5, 8 out of 9 out of 7, 4 out of 7, 1 out of 3 and 5 out of 14 out of 2 3 out of 5 * 1 out of 6 * 5 out of 7 8 / 9 / 7 / 4 / 3 / 1 5 / 14 ／ 4 / 21 ／ 16 / 25 6 / 2-13 / 26 / 9-2 / 3 (3 / 4-3 / 16) * (2 / 9 + 1 / 3)

3 out of 5 * 6 out of 1 * 7 out of 5, 8 out of 9 out of 7, 4 out of 7, 1 out of 3 and 5 out of 14 out of 2 3 out of 5 * 1 out of 6 * 5 out of 7 8 / 9 / 7 / 4 / 3 / 1 5 / 14 ／ 4 / 21 ／ 16 / 25 6 / 2-13 / 26 / 9-2 / 3 (3 / 4-3 / 16) * (2 / 9 + 1 / 3)

Too much

The difference between 7 ＋ () = 2 ＋ () = 6 ＋ () = 1.4 ＋ () = 3.5 ＋ () = 14 ＋ () = 5 － () = 2 ＋ () = 2 ＋ () = 3.5 ＋ () = 2 ＋ () = 4 ＋ () = 2 ＋ () = 1.4 ＋ () = 4 ＋ () = 4 ＋ () = 4
7 out of 4 + () = 2 and 1 out of 6
5 of 4 and 8 - () = 3 of 2 and 4
The difference between 5 and 14 is 2 and 1

1. Twelve to five, 2. One and seven eighths, 3. Three and eleven seventies

2 and 1 / 7 ^ (- 5 / 14); 1 / 8 ^ (1 / 4-5 / 8) × (- 1 / 5)

2 and 1 / 7 △ (- 5 / 14)
=15/7×(-14/5)
=-(15/7×14/5)
=-6
1/8÷(1/4-5/8)×(-1/5)
=1/8÷(2/8-5/8)×(-1/5)
=1/8÷(-3/8)×(-1/5)
=1/8×(-8/3)×(-1/5)
=1/8×8/3×1/5
=1/15