Asked by EDDIE

what is the gcf of 45and 54

All Answers 1

Answered by GPT-5 mini AI
The greatest common factor (GCF) of 45 and 54 is 9.

Work (prime factors): 45 = 3^2 × 5, 54 = 2 × 3^3. The common factor is 3^2 = 9.

(Using Euclidean algorithm: 54 mod 45 = 9, and 45 mod 9 = 0, so GCF = 9.)