Question

Please help

Answer is 15 but I don’t know how to show my working

Answer 1

Factors of 75 are 1,3,5,15
Factors of 105 1,5,15,
they both have a relative factor of 15 and it is the highest so the answer is 15

Answer 2

Answer: 15

Explanation:

Factors:

75: 1, 3, 5, 15, 25,

15: 1, 3, 5, 15

Write out all the factors of each number and circle the highest factor that both numbers have