23
268
To construct the LCM of a series of numbers we must include any factors which are particular to each of them and one of any factors which are common to all of them. The prime factors of 8 are 2, 2, and 2 ... so the LCM will have at least three 2s = 2, 2, 2 The prime factors of 10 are 2 and 5 ... so now we need to add a 5 to that list = 2, 2, 2 and 5 The prime factors of 12 are 2, 2 and 4 ... so now we need to add a 3 to that list = 2, 2, 2, 3 and 5 The prime factors of 75 are 3, 5 and 5 ... so not we need to add another 5 to that list = 2, 2, 2, 3, 5 and 5 2 x 2 x 2 x 3 x 5 x 5 = 600
The Prime Factors of 15 are 3, 5
The prime factors of 45 are 3 and 5.
23
They are: 2+3 = 5
268
23
-103
15 + 15 + 5 + 5 + 3 + 1 = 44
-13
-7
The factors of 3 are 1 and 3 and the factors of 5 are 1 and 5
Add them up. The prime factors of 30 are 2, 3 and 5. You can handle the rest.
7
The factors of -504 are 2, 2, 2, 3, 3, 7 and -1. Then the factors that add to -3 are -24 and 21.