You need at least two fractions to find something in common.
15
LCD(49, 21) = 147
40... lets check 5= 10 15 20 25 30 35 40 8= 16 24 32 40 yup its 40
I'm not sure if you got the right abbreviation of that term. LCD = Least Common Denominator = 1 GCD = Greatest Common Denominator = 17 LCM = Least Common Multiple = 34
15
LCD(15, 7, 8) = 840.
The LCD of x, 5, 7, 15 is 105x.
15
LCD(5, 15) = 15
LCD is 24
15
120
360
15
15
The LCD of 13, 14 and 15 is 2730 The LCD of 1/3, 1/4 and 1/5 is 60
1