a)
x = 1,(41)
100x = 141,(41)
100x-x = 141,(41)-1,(41)
99x = 140 |:99
x = 140/99 = 1 41/99
b)
x= 0,2(1)
100x = 21,(1)
10x = 2,(1)
100x-10x = 21,(1)-2,(1)
90x = 19 |:90
x = 19/90
c)
x = 27,0(51)
1000x = 27051,(51)
10x = 270,(51)
1000x-10x = 27051,(51)-270,(51)
990x = 26781 |:990
x = 26781/990 = 27 51/990 = 27 17/330