54/9-4,55 4/9+4,55 4/9÷4,55 4/9×4,5/это дробь

Question

Математика: 54/9-4,55 4/9+4,55 4/9÷4,55 4/9×4,5/это дробь​

nastyasmirniv · Answer

5 4/9 - 4,5 = 5 4/9 - 4 1/2 = 5 8/18 - 4 9/18 = 4 26/18 - 4 9/18 = 17/18

5 4/9 + 4,5 = 5 4/9 + 4 1/2 = 5 8/18 + 4 9/18 = 9 17/18

5 4/9 ÷ 4,5 = 49/9 ÷ 9/2 = 49/9 × 2/9= 98/81 = 1 17/81

5 4/9 × 4,5 = 49/9 × 9/2 = 49/2 = 24,5

54/9-4,55 4/9+4,55 4/9÷4,55 4/9×4,5/это дробь​