Find the greatest common divisor (GCD) of 84 and 126.
Note
Factor 84 = 2^2 × 3 × 7 and 126 = 2 × 3^2 × 7; the common factors are 2 × 3 × 7 = 42, so the GCD is 42.
Find the greatest common divisor (GCD) of 84 and 126.
Factor 84 = 2^2 × 3 × 7 and 126 = 2 × 3^2 × 7; the common factors are 2 × 3 × 7 = 42, so the GCD is 42.