20 is the lowest common denominator for 4 and 10.
4
20
Multiply 3*4 = 12
Start by finding a common denominator. If the radical includes the entire fraction (3/4 for the first part), the common denominator would be square root of 12.
20, although if you reduced 15/20 to 3/4, the common denominator would be 4.
20 is the lowest common denominator for 4 and 10.
4.
4
20
Well, darling, the common denominator for 1/3 and 4/9 is 9. You see, to add or subtract fractions, you need a common denominator, and in this case, multiplying 3 by 3 gives you 9. So, there you have it, simple math for a simple question.
The LCD of 3/4 and 4/5 is 20.
The LCD for 3/4 and 4/7 is 28.
32 (8x4)
20
Multiply 3*4 = 12
Start by finding a common denominator. If the radical includes the entire fraction (3/4 for the first part), the common denominator would be square root of 12.