а) x=0.111111...
10x=1.111111...
10x-1x=1
x=1/9
б) x=2.77777...
10x=27.77777...
9x=25
x=25/9
в)x=4.12121212...
100x=412.12121212
99x=408
x=408/99=136/33
г) 10x=1.23232323...
1000x=123.2323
990x=122
x=122/990=61/495
д) 100x=253.353535...
10000x=25335.353535...
9900x=25082
x=25082/9900=12541/4950
а) x=0.111111...
10x=1.111111...
10x-1x=1
x=1/9
б) x=2.77777...
10x=27.77777...
9x=25
x=25/9
в)x=4.12121212...
100x=412.12121212
99x=408
x=408/99=136/33
г) 10x=1.23232323...
1000x=123.2323
990x=122
x=122/990=61/495
д) 100x=253.353535...
10000x=25335.353535...
9900x=25082
x=25082/9900=12541/4950