11.18= 11.9.2 = 6.3.11 15.45 = 9.5.15 = 45.3.5 => 11.18=11.9.2=6.3.11 15.45=9.5.15=45.3.5
11.18= 11.9.2 = 6.3.11 15.45 = 9.5.15 = 45.3.5
=> 11.18=11.9.2=6.3.11 15.45=9.5.15=45.3.5
ta có :
11.18 = 11.9.2 = 6.3.11
15.45 = 45.3.5 = 9.5.15
15.45 = 45.3.5 = 9.5.15
11.18 = 11.9.2 = 6.3.11