find the LCM by prime factorization method. 6) 72,81,90
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Step-by-step explanation:
72 = 2x2x2x3x3
81 = 3x3x3x3
90 = 2x3x3x5
LCM = 2x2x2x3x3x3x3x5
LCM = 3240
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