Find the least common multiple (LCM) of 5 and 7, 10 and 2, and 9 and 6.?

Answer 1

LCM(5,7) = 5*7 = 35, because 5 and 7 are both prime

LCM(10,2) = 10, because 2 divides 10

LCM(9,6) = 18, because 9 = 3*3, and 6 = 3*2, so the LCM has two factors of 3 and 1 factor of 2. 3*3*2 = 18.

In general, LCM(a,b) = a*b / GCF(a,b), where GCF = greatest common factor. In other words, you can find the LCM by writing the prime factorizations of a and b, and taking each factor the maximum number of times it appears in any number. Multiply them all together and you have the LCM.

Shortcuts: LCM(a,b) = ab if a,b are relatively prime, and LCM(a,b) = b if a divides b.

Answer 2

5=0 5 10 15 20 25 30 35 40 45 50

7=0 7 14 21 28 35 42 49 56 63 70

10=0 10 20 30 40 50 60 70 80 90 100

2=0 2 4 6 8 10 12 14 16 18 20

9=0 9 18 27 36 45 54 63 72 81 90

6=0 6 12 18 24 30 36 42 48 54 60

look 4 d least common multiple here in this table :D

Answer 3

5 and 7 no least common multiple
10 and 2= LCM= 2
9 AND 6 = LCM= 3

Answer 4

we have : 5 = 5*1 and 7 = 7*1 so their LCM = 5*7 = 35
10 = 2*5 and 2 = 2*1 so their LCM = 5*2 =10
9 = 3^2 and 6 = 2*3 so their LCM = 3^2 * 2 =18

Answer 5

1

Answer 6

Least Common Multiple Of 5 And 7

Answer 7

LCM(5,7)=35
LCM(10,2)=10
LCM(9,6)=18

Answer 8

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2 * 3 * (2^2) * 5 * (2*3) * 7 * (2^3) * (3^2) * (2*5) Find the LCM by taking each prime and it's largest exponent 2^3 * 3^2 * 5 * 7 = 2520

Answer 9

find the lcm of 5,7 and 9

Answer 10

Are you kidding?
However, I want to answer
the answer are 35, 10, 18 respectively