Respuesta :

Answer:

1. 1+2

2. 4-1

3. 3-2

4. 14+18

5. 10-6

6. 5-4

Step-by-step 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