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Since the second one is a multiple of the first, it is automatically the LCM.

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7y ago
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10y ago

(6x)y = (2*3*x)y = 2y*3y*xy

(12x)4y = (2*2*3*x)4y = 24y*24y*34y*x4y = 28y*34y*x4y

So LCM = 28y*34y*124y which is the second number, (12x)4y

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Q: How do you find the least common multiple of 6x to the power of y and 12x to the power of 4 y?
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