1,(8) = 1 intreg 8/9 = 17/9
0,8 = 8/10 = 4/5
9,(4) = 9 intregi 4/9 = 85/9
8,(3) = 8 intregi 3/9 = 75/9 = 25/3
=>1K:17/9=9K/17
=>1K:4/5=5K/4
=>1K:85/9=9K/85
=>1K:25/3=3K/25
Numitor comun :
17=17
4=2²
85=5·17
25=5²
_______
c.m.m.m.c.=2²·5²·17=1700 care este numitor comun