The greatest common factor (GCF) of 8a and 28 is 4.
To factor out the GCF, divide each term by 4:
8a ÷ 4 = 2a
28 ÷ 4 = 7
Therefore, the expression 8a - 28 can be factored as follows:
8a - 28 = 4(2a - 7)
Factor 8a - 28 using the gcf
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