b + 2 целых 4/11 = 2/3
b = 2/3 - 2 4/11 = 2/3 - 26/11 = 22/33 - 78/33 = - 56/33 = - 1 23/33
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b + 2 целых 4/11 = 2/3
b = 2/3 - 2 4/11 = 2/3 - 26/11 = 22/33 - 78/33 = - 56/33 = - 1 23/33