0.6 - 1.6 = - 1
Quindi 1.(3) = (13 - 1)/9 = 12/9 = 4/3
0.(6) = (6 - 0)/9 = 2/3
0.(3) = (3 - 0)/9 = 1/3
e risulta
(4/3 - 2/3)/(2/3 - 1/3) - 1 = 2/3 : 1/3 - 1 =
= 2/3 * 3 - 1 = 2 - 1 = 1
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