20
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8
Factor them.2 x 2 = 42 x 5 = 10Combine the factors, eliminating duplicates2 x 2 x 5 = 20, the LCDorList the multiples.4, 8, 12, 16, 20, 2410, 20, 30
The lowest common denominator of 6 and 9 is three.
No, it cant because 9* any thing is not seven teen
The LCD for 3/4 and 1/10 is 20