The least common denominator of 25, 15, and 3 is 75. To get this we need to find the smallest number that is divisible by 25, 15, and 3 without any remainders. Since 25 has to go into the number it is easiest to first look at which numbers are divisible by 25 without any remainder. This would be numbers like 25, 50, 75, 100, etc. Then look at which of these numbers are divisible by 15 and 3 without any remainder. The first number that is is the least common denominator. In this case, it is 75.
15
LCD for 3, 23, 14, 25 is 24150.
15
15 = 3 x 5 25 = 5 x 5 6 = 2 x 3 LCM = 2 x 3 x 5 x 5 = 150
15
The LCD of 13, 14 and 15 is 2730 The LCD of 1/3, 1/4 and 1/5 is 60
It is: 15
LCD(49, 21) = 147
LCD(3, 12, 15) = 60
15
15.
If that's 3/11 and 2/5, the LCD is 55.