Well, if that's the question, then you'll probably need to know
what their GCF is. Does that sound reasonable to you ?
What's the GCF of 44 and 40 ?
The factors of 44 are: 1, 2, 4, 11, and 44 .
The factors of 40 are: 1, 2, 4, 5, 8, 10, 20, and 40 .
The common factors are: 1, 2, and 4 .
The greatest one is 4 . <== GCF
OK.
Now, what's each number as a product of the GCF and something else "
44 is 4 times 11
40 is 4 times 10.
So . . . . . (44 + 40) is the same thing as 4 times (11 + 10) .
