Answer:The gcf of 70 and 28 is 14 .
Step-by-step explanation:Here's how: 1. List the factors: - Factors of 70: 1, 2, 5, 7, 10, 14, 35, 70- Factors of 28: 1, 2, 4, 7, 14, 282. Identify the common factors: - Common factors of 70 and 28: 1, 2, 7, 143. The greatest common factor: - The greatest common factor (GCF) of 70 and 28 is 14.