Is 81 a multiple of 3? explain, is 46 a multiple of 4, explain, is 55 a multiple of 7? explain is 72 a multiple of 9 explain, is 45 a multiple of 6 explain

3x27=81 so 81 is a multiple of 3

there is no integer x for which 4x=46 so 46 is not a multiple of 4

there is no integer x for which 7x=55 so 55 is not a multiple of 7

72 = 8*9 so 72 is a multiple of 9

there is no integer x for which 6x=45 hence 45 is not a multiple of 6

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