Question

Which expression shows 28 + 35 as the product of their greatest common factor and the sum of two whole numbers with no common factor?

Answer 1

I don't see answer choices, but I'll do without them.

first, prime factorize the two numbers

28 being 2 x 2 x 7

35 being 5 x 7

find the common factors being 7

so 7 ((2x2) + 5)

7 x (4+5)

7 x 9

63