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(2 x 9) + (3 x 9) = 5 x 9 = 45
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45
28
9(2 + 3)
7(7 + 9)
5(8 + 5)
7(5 + 6)
3 (21+5)
11(5 + 6)
4 x 13
The GCF of 75 and 90 is 15.
(11 x 4) + (10 x 4) = 21 x 4 = 84