Answer:
1. 1+2
2. 4-1
3. 3-2
4. 14+18
5. 10-6
6. 5-4
Explanation:
1. GCF is 7
2. GCF is 11
3. GCF is 6
4. GCF is 5
5. GCF is 6
6. GCF is 20
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