question found in a mental math book grade 7.

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no.  Wen yu hav EXAKTLY 2 numbers, produkt av 2 =LCM*biggest fakter

yu giv 21 & 352

that meen both numbers must be 21*sumthun

That impli LCM=21*sumthun...i.e. 352/21 gotta hav leftover=0

but 352/21=16.76190476

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