4/27 · 9/16 = (1·1)/(3·4) = 1/12
5 3/5 · 1 4/21 = 28/5 · 25/21 = (4·5)/(1·3) = 20/3 = 6 целых 2/3
13/16 · 32 = 13 · 2 = 26
4/27 · 9/16 = (1·1)/(3·4) = 1/12
5 3/5 · 1 4/21 = 28/5 · 25/21 = (4·5)/(1·3) = 20/3 = 6 целых 2/3
13/16 · 32 = 13 · 2 = 26