If you meant LCD, the answer is LCD(9, 7, 18) = 126 But if you did mean LDC, then apologies. I have no idea what that LDC is in a mathematical context.
lcd(9, 6) = 18.
18 is.
LCD(7, 9, 2) = 126.
LCD(7,9,13) = 7*9*13 which is 819
18
lcd for 33,27 and 9 is 297
It is: 18
It is: 18
18
90
18