((4 5/7-1 11/14)×4 2/3+(3 2/9- 1 5/6)×18/25)÷2 3/4 - вопрос №4114379457111144233291561825234 от asarapik 11.07.2020 06:25

Question

Математика: ((4 5/7-1 11/14)×4 2/3+(3 2/9- 1 5/6)×18/25)÷2 3/4 .

asarapik · Answer

1) 4 5/7 - 1 11/14 = 33/7 - 25/14 = (66 - 25)/14 =41/14.
2) 41/14 · 4 2/3 = 41/14 · 14/3 = 41/3.
3) 3 2/9 - 1 5/6 = 29/9 - 11/6 = (58 - 33)/18 = 25/18.
4) 25/18 ·18/25 = 1.
5) 41/3 + 1 = 41/3 + 3/3 = 44/3.
6) 44/3 : 2 3/4 = 44/3 : 11/4 = 44/3 · 4/11 = 16/3 = 5 1/3.
ответ: 5 целых 1/3.