28 + 35 = (4 x 7) + (5 x 7) = 9 x 7 = 63
40 + 44 = (4 x 10) + (4 x 11) = 4 x 21 = 84
9(2 + 3)
The difference.
7(5 + 6)
32 + 20 = 4 x (8 + 5)
12(6 + 5)
Factor the sum of terms as product of the GCC and a sum of 10t+15
40 + 44 = (4 x 10) + (4 x 11) = 4 x 21 = 84
.
3 (21+5)
11(5 + 6)
5(8 + 5)
9(2 + 3)
9(2 + 3)
7(7 + 9)
The GCF of 75 and 90 is 15.
Not too sure of your question but the GCF of 75 and 90 is 15