28 and 56
Common multiples of 7 and 4 include any multiple of 28.
4 of them.
28, 56
I don't know 2, but 4x7=28, and that is a common factor.
The common multiples of 4 and 7 are 28, 56, 84, and so on.
Since 4 divides 12, they are the first 7 multiples of 12.
The common multiples of 2 and 7 are 14, 28, 42, 56, 70, 84, 98, and so on.
2,56,84
First, we need to fin the LCM of 2, 5, and 7, wich is 70. So that all the multiples of 70 are all common multiples of 2, 5, and 7 such that: 70 x 1 70 x 2 70 x 3 70 x 4 . . .
14,28,42,56,70...
42
The LCM of 2 and 3 is 6. The LCM of 2 and 4 is 4. The LCM of 5 and 7 is 35. The LCM of 7 and 9 is 63.