If you mean lcm, it is 36 because 9 x 4 equals 36 and 3 x 12 equals 36.
315
72
the LCD of 2, 9 and 5 = 90
LCD= Lowest Common Denominator=72
If that's 84 and 35, the LCD is 420.If that's 8/4 and 3/5, the LCD is 20.
63
315
504
72
63
LCD(7, 9, 2) = 126.
The LCD or LCM is 504
3
LCD(7,9,13) = 7*9*13 which is 819
1/3, 3/4, 5/32, 8/9The LCD is 288.
5*(-8)+7*(9) = 23
the LCD of 2, 9 and 5 = 90