Question 1 • Common Core Algebra I B-IC
The greatest common factor is the largest whole number that divides both numbers evenly. The common factors of 84 and 56 include 1, 2, 4, 7, 14, and 28; 28 divides both (84 ÷ 28 = 3 and 56 ÷ 28 = 2). No larger factor can divide 56, so the GCF is 28, choice D.
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