Write the sum of the numbers as the product of their gcf and another sum.
48 + 14

It looks like the first thing you have to find is their GCF, ya reckon ?

The factors of  56  are  1, 2, 4, 7, 8, 13, 28, and 56 .

The factors of  64  are  1, 2, 4, 8, 16, 32, and 64 .

The common factors are  1, 2, 4, and 8 .

The greatest one is  8 .

56/8 = 7
64/8 = 8

56  plus  64 = (8 times 7)  plus  (8 times 8)

56  plus  64 =  8 times (7 plus 8)    <== that's the answer

Check it out:

56  plus  64 = 120

8 times (7 plus 8) = 8 times 15 = 120