Any divisor of a negative number is also a divisor of its absolute value: gcd(-3, 5) = gcd(3, 5) Find the divisors of each integer and select the largest element they have in common: The divisors of 3 are: 1, 3 The divisors of 5 are: 1, 5 The largest number common to both divisor lists is 1: divisors of 3: 1, 3 divisors of 5: 1, 5.
GCD of -3, 5 =1
