1060,
1) 4 - 7/12 + 1 5/6 + 2 1/3 - 1 1/4 = ?
4 - 7/12 = 3 5/12 и 3 5/12 + 1 5/6 = 5 1/4 и 5 1/4 + 2 1/3 = 7 7/12
и 7 7/12 - 1 1/4 = 6 1/3 - ОТВЕТ
2) 6 3/5 - 2 7/15 + 8 3/4 - 1 1/60 = ?
6 3/5 - 2 7/15 = 4 2/15 и 4 2/15 + 8 3/4 = 12 53/60 и 12 5360 - 1 1/60 =
11 13/15 - ОТВЕТ
3) 9 11/18 - 5 3/4 - 1 15/36 + 2 7/9 = ?
9 11/18 - 5 3/4 = 3 31/36 и 3 31/36 - 1 15/36 = 2 4/9 и 2 4/9 + 2 7/9 =
5 2/9 - ОТВЕТ
4) 5 5/8 + 8 3/4 - 6 1/5 + 3 = ?
5 5/8 + 8 3/4 = 14 3/8 и 14 3/8 - 6 1/5 = 8 7/40 и 8 7/40 + 3 =
11 7/40 - ОТВЕТ