315
315
21 and 5
3 x 5 x 7 = 105
137
52.5, when added together.
105 = 3 x 5 x 7
52.5 x 2 = 105
They are: 3*5*7 = 105
21*5 is the answer
35x3, 21x5 or 15x7
2 and 5 are both prime numbers. If you multiply them together, the answer is 10. 10 is the LCM of 2 and 5.