(2 4/7 + 4 1/8 : 2 3/4) : 2 1/9 = 1 13/14
1) 4 1/8 : 2 3/4 = 33/8 : 11/4 = 33/8 · 4/11 = (3·1)/(2·1) = 3/2 = 1 1/2
2) 2 4/7 + 1 1/2 = 2 8/14 + 1 7/14 = 3 15/14 = 4 1/14
3) 4 1/14 : 2 1/9 = 57/14 : 19/9 = 57/14 · 9/19 = (3·9)/(14·1) = 27/14 = 1 13/14
ответ: 1 целая 13/14.
(2 4/7 + 4 1/8 : 2 3/4) : 2 1/9 = 1 13/14
1) 4 1/8 : 2 3/4 = 33/8 : 11/4 = 33/8 · 4/11 = (3·1)/(2·1) = 3/2 = 1 1/2
2) 2 4/7 + 1 1/2 = 2 8/14 + 1 7/14 = 3 15/14 = 4 1/14
3) 4 1/14 : 2 1/9 = 57/14 : 19/9 = 57/14 · 9/19 = (3·9)/(14·1) = 27/14 = 1 13/14
ответ: 1 целая 13/14.