Левее, т.е. меньше
а)4/11 и 7/22
4/11 (*2) и 7/22
8/22 > 7/22 => 7/22 левее
б)- 4/11 и - 7/22
- 4/11 (*2) и - 7/22
- 8/22 < - 7/22 => -4/11 левее
в) 3/8 и 4/9
3/8 (*9) и 4/9(*8)
27/72 < 32/72 =>3/8 левее
г)- 1/4 и - 2/5
- 1/4 (*5) - 2/5(*4)
- 5/20 > -8/20 =>-2/5 левее