Answer:

1. 30 - 2×3×5

10 - 5×2

GCF = 10

2. 24 - 2×2×2×3

40 -2×2×2×5

GCF = 8

3. 15 - 3×5

45 - 3×3×5

GCF = 15

4. 9 - 3×3

72 - 2×2×2×3×3

GCF = 9

5. 47 - 1×47

18 - 2×3×3

GCF = 1

Answer:

here is my answer po in the picture.

Step-by-step explanation:

hope it helps :)