It should be noted that the expression for 72 + 40 will be 8(9 + 5).
The factors of 72 are:
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72.
The factors of 40 include:
1, 2, 4, 5, 8, 10, 20 and 40
Therefore, it can be seen that the greatest common factor between the numbers is 8.
The expression for 72 + 40 will be 8(9 + 5).
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