1) 2,33333
X= 21
9
10X = 23,3333
X = 2,3333
X = 7
3
9X = 21,0000
2) 0,777777
10X = 07,77777
X = 0,77777
9X = 07,00000
3) 0,45454545
100X = 045,454545
X = 0,454545
99X = 045,000000
4) 0,343434
100X = 034,3434
X = 0,3434
99X = 034,0000
5) 0,231231231
1000X = 0231,231231
X = 0,231231
999X = 0231,000000
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