30 ;D
Their product. If that's 1/6 and 1/5, the LCD is 30
The LCD is 60. (60/4 = 15, 60/5 = 12, 60/6 = 10)
30
LCD(9, 15) = 45
LCD(15, 26) = 390
The LCD of 6 is 1
LCD(6, 8) = 24
LCD(6, 27) = 54
the LCD is 6
lcd(9, 6) = 18.
LCD(20, 6) = 60
LCD(15, 7, 8) = 840.