0
Find LCM (40,35,18).
40 = 2 x 2 x 2 x 5
35 = 5 x 7
18 = 2 x 3 x 3
GCF(40,35) = 5
LCM(40,35,18) = LCM(LCM(40,35),18)
LCM(40,35) = (40 x 35) / GCF(40,35)
LCM(40,35) = 1400 / 5
LCM(40,35) = 280
LCM(40,35,18) = LCM(280,18)
280 = 2 x 2 x 2 x 5 x 7
18 = 2 x 3 x 3
GCF(280,18) = 2
LCM(280,18) = (280 x 18)/GCF(280,18)
LCM(280,18) = 5040 / 2
LCM(280,18) = 2520
LCM(40,35,18) = 2520
If you have time, check to make sure that this is the true LCM. Here's how to do it.
Divide 2,520 by 40, 35, and 18.
2520/40 = 63
2520/35 = 72
2520/18 = 140
If this is the true LCM, then these three numbers you get (63, 72, and 140) will have a GCF of 1.
63 = 3 x 3 x 7
72 = 3 x 3 x 2 x 2 x 2
140 = 2 x 2 x 5 x 7
GCF(63,72,140) =? 1
1 = 1
2,520 is indeed the true LCM.
Still curious? Ask our experts.
Chat with our AI personalities
Ross
Steve
JordanAdd your answer:
Earn +20 pts
What is the LCM of 12 18 35?
Least Common Multiple (LCM) for 12 18 35 is 1,260.
What is the the least common multiple of 15 27 and 35?
The Least Common Multiple (LCM) for 15 27 35 is 945.
What is the least common multiple of 7 21 and 35?
The LCM of 7, 21 and 35 is 105.
What is the least common multiple of 25 35 and 49?
The least common multiple (LCM) is often also called the lowest common multiple or smallest common multiple. Keep in mind that these different terms all refer to the same thing: the smallest positive integer which is a multiple of two or more numbers.The least common multiple of 25, 35, and 49 is 1225.1225
What is the least common multiple of 35 49 63 126?
4410
