what is the least common multiple of 56 and 42?

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2006-12-04 13:59:07 · 5 answers · asked by Natalie 1 in Science & Mathematics ➔ Mathematics

LCM is 168

(8 x 7) x 3 = 168
56 x 3 = 168
(6 x 7) x 4 = 168
42 x 4 = 168

Hope this helps!

2006-12-04 14:09:17 · answer #1 · answered by luv3kids 2 · 0⤊ 0⤋

Yupchagee got the right answer, but his work was flawed.
56=7*4*2
42=7*3*2
LCM=7*4*3*2=168
56 goes into that 3 times and 42 goes into it 4 times.

2006-12-04 22:13:37 · answer #2 · answered by young_at_heart_05 2 · 0⤊ 0⤋

56=2^3*7
42=2*3*7
LCM=2^3*3*7=168

2006-12-04 22:01:41 · answer #3 · answered by yupchagee 7 · 0⤊ 0⤋

Doing homework? Yahoo Answers is not for cheating. Sorry.

2006-12-04 22:06:17 · answer #4 · answered by Michael 2 · 0⤊ 0⤋

2006-12-04 22:03:16 · answer #5 · answered by audrey_halley2004 4 · 0⤊ 0⤋