A = 1 1/5
B = 2 3/5
C = 4 1/5
1 1/5 + 2 3/5 + 4 1/5 - 5/11 = 8 - 5/11 = 7 6/11
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A = 1 1/5
B = 2 3/5
C = 4 1/5
1 1/5 + 2 3/5 + 4 1/5 - 5/11 = 8 - 5/11 = 7 6/11
B(2.3/5)
C(4.1/5)
1.1/5+2.3/5+4.1/5-5/11=6/5+13/5+21/5-5/11=6•11+13•11/55+21•11/55-5•5/55=66+133+231-25/55=430/55-25/55=405/55=7.20/55
Ответ:7 целых 20/55