6 3/11 = (116+3)/11 = 69/11 ≈ 6.21 8/11 = (111+8)/11 = 19/11 ≈ 1.77 2/5 = (5*7+2)/5 = 37/5 = 7.4
20 ÷ (6.27 + 1.73) + (7.4 - 5.8) ÷ = 20 ÷ 8 + 1.6 ÷ = 2.5 + 0.3= 2.82
Ответ: 2.82
6 3/11 = (116+3)/11 = 69/11 ≈ 6.2
1 8/11 = (111+8)/11 = 19/11 ≈ 1.7
7 2/5 = (5*7+2)/5 = 37/5 = 7.4
20 ÷ (6.27 + 1.73) + (7.4 - 5.8) ÷
= 20 ÷ 8 + 1.6 ÷
= 2.5 + 0.3
= 2.82
Ответ: 2.82