2007-10-21 13:43:17 · 5 answers · asked by S 2 in Science & Mathematics ➔ Mathematics
The LCM of 21 and 35 is 105.
2007-10-21 13:52:18 · answer #1 · answered by JakeS 2 · 0⤊ 0⤋
Hi,
The long way to do this is to find the prime factors of the two numbers; then the product of the factors with the highest exponents (do not repeat a factor) is the LCM.
21=3*7
35=5*7
LCM = 3*5*7
Seven appears twice in the factoization, but remember that we don't use repeats.
So, what's the short way? Use a TI-83 Plus or TI-84 calculator.
a) Press MATH, move to highlight NUM, move the cursor down to lcm( and press ENTER.
b) Enter the numbers so that you entry looks like this:
lcm(35, 21). Press ENTER and the LCM will be displayed.
FE
2007-10-21 14:15:30 · answer #2 · answered by formeng 6 · 0⤊ 0⤋
7
2007-10-21 13:51:35 · answer #3 · answered by UFGator1321 2 · 0⤊ 0⤋
105
2007-10-21 19:40:59 · answer #4 · answered by firefly 5 · 0⤊ 0⤋
105 just list ur factors
2015-10-27 11:02:46 · answer #5 · answered by poku 1 · 0⤊ 0⤋