231
33
99
33 and 30 have only two common factors. Their greatest common factor is 3 . Their least common factor is 1 .
LCD(33, 40) = 1320LCD(33, 40) = 1320LCD(33, 40) = 1320LCD(33, 40) = 1320
LCD(22, 33) = 66.
LCD(6, 14) = 42
21
3 x 11 x 20 = 660
168
It is: 42
84
It is: 63