Question

Question #956fd

Answer 1

180

Explanation:

Find the unique prime factors for each number and multiply the factors together.

`12 = 2 xx 2 xx 3`
`18 = 2 xx 3 xx 3`
`45 = 5 xx 3 xx 3`

There are two factors of 2 needed ( the factor of 2 for 18 is a repeat.)

There are two factors of 3 needed ( the factors of 3 in 12 and 45 are repeats.)

There is one unique factor of 5

Multiplying the non repeated or unique factors gives.

The Least Common Multiply `= 2 xx 2 xx 3 xx 3 xx 5`

`2 xx 2 xx 3 xx 3 xx 5 = 180`