4/9 : (5/9 + 17/27) = 3/8
1) 5/9 + 17/27 = 15/27 + 17/27 = 32/27
2) 4/9 : 32/27 = 4/9 · 27/32 = (1·3)/(1·8) = 3/8
ответ: 3/8.
4/9 : (5/9 + 17/27) = 3/8
1) 5/9 + 17/27 = 15/27 + 17/27 = 32/27
2) 4/9 : 32/27 = 4/9 · 27/32 = (1·3)/(1·8) = 3/8
ответ: 3/8.