9= 9 18 27 36 45 54 63 72 81 90 99 108 8= 8 16 24 32 40 48 56 64 72 80 88 92
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8 and 9 are corpime, so their first common multiple is their product. The next common multiples are simply the multiples of that first multiple.The first three common multiples are therefore 72, 144 and 216.
The first 3 multiples of 4 are: 4, 8, and 12.The first 3 multiples of 9 are: 9, 18, and 27.
9 18 27 36 45 54 63 72 are the first 8 multiples of 9
The common multiples of 9 and 16 are 144, 288, 432 and so on.
The firt three multiples of 8 are 8, 16 and 24.