What is the LCM of 4 and 15? and LCM of 14 and 21?

1 ⤊

i need help with both of those. if so that would be great!!!!

2007-01-02 16:18:55 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

4 and 15: 60.

14 and 21: 42.

2007-01-02 16:24:36 · answer #1 · answered by ? 6 · 1⤊ 0⤋

LCM of 4 and 15 is 1 i think. LCM of 14 and 21 is 7

2007-01-03 00:20:50 · answer #2 · answered by citygurl8503 4 · 0⤊ 1⤋

a) LCM(4, 15) =2Â²*3*5 = 4*3*5 = 60
4, 15| 2
2, 15| 2
1, 15| 3
1, 05| 5
1, 1

b) LCM(14, 21) = 2*3*7 = 42
14, 21| 2
07, 21| 3
07, 07| 7
01, 1
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2007-01-03 00:28:07 · answer #3 · answered by aeiou 7 · 0⤊ 0⤋

yeah,
60
42
i almost forgot how to do that1!!

2007-01-03 00:44:23 · answer #4 · answered by Anonymous · 0⤊ 0⤋