The common denominator of 15 and 9 is 45.
The greatest common denominator is infinite. The least common denominator is 45.
45
45
It is: 45
least common denominator for 15 and 10 is 30, so 9/15 = 18/30 and 7/10 = 21/30
The LCM is 225.
It is 3
180
180
765
45