(1 17/25 * 2 1/7 - 2 4/7 * 1 2/5) * 2 7/9 =
1/2 + (5 1/6 - 3 3/4 + 1/2) * 10/23 =
10 5/9 - 1 7/32 * (4 14/15 + 3 1/15) =
1/13 * (2 3/8 - 1 5/6) * 2 2/5 + 9/10 =
ПОМОГИТЕ ПОЖАЛУЙСТА