Answer:
see explanation
Explanation:
the factors of 42 are 1, 2, 3, 6, 7, 14 , 21, 42
the factors of 12 are 1, 2, 3, 4, 6, 12
common factors are 1, 2, 3, 6
GCF = 12
then
42 + 12 ← factor out 6 from each term
= 6(7 + 2)
The gcf is 6
so: 42+12= 6(7+2)
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