20 : (6 3/11 + 1 8/11) + (7 2/5 - 5,8) : 5 = 2,82
1) 6 3/11 + 1 8/11 = 7 11/11 = 8
2) 7 2/5 - 5,8 = 7,4 - 5,8 = 1,6
3) 20 : 8 + 1,6 : 5 = 2,5 + 0,32 = 2,82
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20 : (6 3/11 + 1 8/11) + (7 2/5 - 5,8) : 5 = 2,82
1) 6 3/11 + 1 8/11 = 7 11/11 = 8
2) 7 2/5 - 5,8 = 7,4 - 5,8 = 1,6
3) 20 : 8 + 1,6 : 5 = 2,5 + 0,32 = 2,82