Ответ:
Пошаговое объяснение:
(1)
1) 3/5 * 4/9 = 4/15
2) 4/15 + 1 1/3 = 4/15 + 1 5/15 = 1 9/15 = 1 3/5
ответ: 1 3/5
(2)
1) 1 1/4 * 2/5 = 5/4 * 2/5 = 1/2
2) 1/2 - 1/3 = 3/6 - 2/6 = 1/6
ответ: 1/6
(3)
1) 3/8 : 1/2 = 3/8 * 2 = 3/4
2) 3/4 + 3 1/4 = 4
ответ: 4
(4)
1) 5/6 : 1/3 = 5/6 * 3 = 5/2 = 2 1/2
2) 2 1/2 + 1 3/8 = 2 4/8 + 1 3/8 = 3 7/8
ответ: 3 7/8
(5)
1) 1 2/5 : 5/7 = 7/2 * 7/5 = 49/10 = 4 9/10
2) 4 9/10 + 3/8 = 4 36/40 + 15/40 = 4 51/40 = 5 11/40
ответ: 5 11/40
(6)
1) 2 1/3 : 1 5/9 = 7/3 : 14/9 = 7/3 * 9/14 = 3/2 = 1 1/2
2) 1 1/2 - 5/6 = 1 3/6 - 5/6 = 4/6 = 2/3
ответ: 2/3