360
Least common denominator means the LCM (least common multiple) of the denominator of a set of fractions. However, here is only 1 number provided in the question, 72, and even then 72 is not a fraction. Therefore, there is no least common denominator for 72.
Prime factor each number. 18=2x3x3 45=3x3x5 72=2x2x2x3x3 Use each prime factor the number of times it was used the MOST in any one of the numbers. 2x2x2x3x3x5=360 The least common denominator of 18, 45, and 72 is 360.
The least common multiple for 45, 54, and 72 is 1080.
The least common multiple of 45 , 54 , 72 = 1,080
It is 72.
360
72
It is: 72
72
The least common denominator is 2 * * * * * That is totally wrong. LCD(24, 36) = 72
72
72