Question

what is the answer of lcm of 9, 10 and 7​

Answer 1

Answer:

To find the least common multiple, I like to do a prime factorization of the numbers. From those factorizations, we take all the unique primes and multiply them together. Like this:

9

=

3

×

3

10

=

2

×

5

7

=

7

Looking at the prime factorizations, all the factors need to be included. And so we'll get:

2

×

3

×

3

×

5

×

7

=

630

Let's check it:

630

=

9

×

(

2

×

5

×

7

)

630

=

10

×

(

3

×

3

×

7

)

630

=

7

×

(

2

×

3

×

3

×

5

)

Answer 2

Answer:

the answer is 630

hope it helps

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