A) 0,(7) = 0.(7) = 7/9
Б) 2,4(3) = 2 + 4/10 + 3/90 = 2 + 4/10 + 1/30 = 2 + 2/5 + 1/30 = 10/5 + 2/5 + 1/30 = 12/5 + 1/30 = (126 + 1) / 56 = 73/30
A) 0,(7) = 0.(7) = 7/9
Б) 2,4(3) = 2 + 4/10 + 3/90 = 2 + 4/10 + 1/30 = 2 + 2/5 + 1/30 = 10/5 + 2/5 + 1/30 = 12/5 + 1/30 = (126 + 1) / 56 = 73/30