Find the highest of each prime power.
40 = 2^3*5
25 = 5^2
20 = 2^2*5
Bring them together. The highest power of 2 is 3, and the highest power of 5 is 2.
2^3*5^2 = 200
The lowest common denominator of 4/25 and 3/50 is 50.
95
225.
The lowest common denominator of any set of whole numbers is 1
100
It is: 400 which is also the LCM
The lowest common denominator of 9, 25, and 49 is 11025.
900
it's 5. 25 is the highest common denominator.
There is none because the Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of a pair of fractions.
300
25