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Anonymous
The LCM is: 252
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The LCM (Least Common Multiple) of 2x7 and 4x9 is 36x63.
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Kadidia Coulibaly ∙
9
Prime factor each number and use the all the prime factors the most it appeared in any one number. 6=2x3 7=7 14=2x7 2x3x7=42
135
2 x 7 + 5 = 19
2x7 - 15 = 14 - 15 = -1