0.(7)
0.(7) = x
7.(7) = 10x
10x - x = 7.(7) - 0.(7)
9x = 7
x = 0.(7) = 7/9
2.(13) = 2 + x
0.(13) = x
13.(13) = 100x
100x - x = 13.(13) - 0.(13)
99x = 13
x = 13/99
2.(13) = 2 13/99
2.1(23) = 2 + x
0.1(23) = x
1.(23) = 10x
123.(23) = 1000x
1000x - 10x = 123.(23) - 1.(23)
990x = 122
x = 122/990 = 61/495
x = 2 61/495 = 2.1(23)
2.4.(14) непонятно
24.(14) как второй решать
2.4(14) как третий решать
0.(7)
0.(7) = x
7.(7) = 10x
10x - x = 7.(7) - 0.(7)
9x = 7
x = 0.(7) = 7/9
2.(13) = 2 + x
0.(13) = x
13.(13) = 100x
100x - x = 13.(13) - 0.(13)
99x = 13
x = 13/99
2.(13) = 2 13/99
2.1(23) = 2 + x
0.1(23) = x
1.(23) = 10x
123.(23) = 1000x
1000x - 10x = 123.(23) - 1.(23)
990x = 122
x = 122/990 = 61/495
x = 2 61/495 = 2.1(23)
2.4.(14) непонятно
24.(14) как второй решать
2.4(14) как третий решать