1) 2 2/5 · 1 7/8 = 12/5 · 15/8 = (3·3)/(1·2) = 9/2 = 4 целых 1/2
2) 7 - 4 1/2 = 6 2/2 - 4 1/2 = 2 целых 1/2
3) 2 1/2 · 5 5/8 = 5/2 · 45/8 = 225/16 = 14 целых 1/16
1) 2 2/5 · 1 7/8 = 12/5 · 15/8 = (3·3)/(1·2) = 9/2 = 4 целых 1/2
2) 7 - 4 1/2 = 6 2/2 - 4 1/2 = 2 целых 1/2
3) 2 1/2 · 5 5/8 = 5/2 · 45/8 = 225/16 = 14 целых 1/16