1,7724358974 у меня так вышло
3 3/11*(2 3/8 + 5/12 - 1 1/6) = 3 3/11* (2 9/24 + 10/24 - 1 4/24) =
= 36/11*(2 19/24 - 1 4/24) = 36/11 * 1 15/24 = 36*39/ 11*24=9*13/11*2=
= 117/22 = 5 7/22
