Question

Lowest common multiple
of 7,9,10

Answer 1

Answer:

1

Step-by-step explanation:

Because 7 is a prime number, meaning it has no other multiple besides 1 and itself.

Multiples:

7 (1,7)

9(1,3,9)

10(1,2,5,10)

You can see that the only multiple and the lowest that they share is 1

Answer 2

Answer:

630

Step-by-step explanation:

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=360

Let's check it:

630=9×(2×5×7)

630=10×(3×3×7)

630=7×(2×3×3×5)