Математика 6 класс учебник Виленкин, Жохов 2 часть ответы – номер 4.380

а) –2 · 1/2 = –1     8/11 · 1/2 = 4/11     –2/7 · 1/2 = –1/7     –8 · 1/2 = –8/2 = –4     22/7 · 1/2 = 16/7 · 1/2 = 8/7 = 11/7     –4 · 1/2 = –2     1,2 · 1/2 = 12/10 · 1/2 = 6/10 = 0,6     –2/5 · 1/2 = –1/5
б) 8 ∶ 3/4 = 8 · 4/3 = 32/3 = 102/3     –22/5 ∶ 3/4 = –12/5 · 4/3 = –16/5 = –31/5     –3 ∶ 3/4 = –3 · 4/3 = –4     –1/2 ∶ 3/4 = –1/2 · 4/3 = –2/3     5/12 ∶ 3/4 = 5/12 · 4/3 = 5 · 1/3 · 3 = 5/9     –6 ∶ 3/4 = –6 · 4/3 = –2 · 4 = –8     1/4 ∶ 3/4 = 1/4 · 4/3 = 1/3     –11/3 ∶ 3/4 = –4/3 · 4/3 = –16/9 = –17/9