Question

What is the greatest common factor of 90 and 135?

Answer 1

• Answer:

GCF = 45

• Explanation:

90 = 9×10 = 3²×2×5

135 = 45×3 = 9×5×3 = 3²×5×3 = 3³×5

GCF = 3²×5 = 9×5 = 45