45 is one one multiple of 9; it is 9 X 5.
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45 9, 18, 27, 36, 45... 45 is the first multiple of 9 that is divisible by 5.
63
The least common multiple (LCM) of 3, 5, and 9 is 45.
There are four numbers: 3, 9, 15 and 45.
Multiples of 9 less than 70 are: 9, 18, 27, 36, 45, 54, 63. So the greatest multiple of 9 that is less than 70 is 63.