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∙ 2009-10-29 00:36:4818/42 = 3/7
19 is a prime number, so the GCD is 1 * * * Right answer, wrong reason. 19 is indeed a prime but the GCD of 19 and 38, for example, is not 1.
18/42 = 3/7 in its simplest form
GCD: 32
GCD: 1
GCD(42, 65) = 1
The GCD of 14, 42 is 14.
GCD: 21
GCD: 14
GCD: 14
The GCF is 3.
Greatest Common Divisor (GCD) for 30 42 is 6.
The Greatest Common Divisor (GCD) for 42 56 is 14.
GCD: 6
GCD(18, 90) = 18
The GCD of 18, 100 is 2.
The GCD of 18, 28 is 2.