360
LCD(9, 15) = 45
255
LCD(15, 7, 8) = 840.
The LCD or LCM is 360
72
120
LCD= Lowest Common Denominator=72
72
but no hellop
You need at least two fractions to find something in common.
24 = 3 x 8 9 = 3 x 3 LCD = 3 x 8 x 3 = 72
1/3 and 3/8 have a lcd of 24 (8/24 and 9/24)