The LCD of 20 and 9 is 180.
The least common denominator is 14. Whenever there are two values, and one is a multiple of the other, the multiple (larger number) is the LCD.
LCD(12, 9) = 36
LCD(7,9,13) = 7*9*13 which is 819
126
LCD is y E
9 multiplied by 14 is 126. So believe it or not the LCD of 2/9 and 3/14 is 126.
630
LCD(11, 16) = 176
LCD(5, 14) = 70
LCD(9, 3) = 9
LCD(9, 21) = 63
The LCD of 20 and 9 is 180.
LCD(9, 15) = 45
LCD(9, 36) = 36.
lcd(9, 6) = 18.
14