The GCF is 10.
The GCF is 5.
The general idea is to find a common factor between the numerator and the denominator, so that you can simplify the fraction. One way is to find the prime factors for numerator and denominator, and look for common factors. This is appropriate for small numbers, but slow for larger numbers. A much faster method for large numbers is Euclid's algorithm. For example, to find the gcf of 70 and 40, subtract 70 - 40. You get 30. The gcf of 70 and 40 is the same as the gcf of 40 and 30. Continue, until one number is a multiple of the other: gcf of 40 and 30 is the same as gcf of 30 and 10; since 30 is a multiple of 10, 10 is the gcf.
The GCF is 19.
The GCF of 40 and 120 is 40.Since 40 is a factor of 120, it is automatically the GCF.
The GCF is 10.
The GCF is 5.
LCM(30, 40, 60) = 120 GCF(30, 40, 60) = 10
The GCF of 20 and 40 is 20 The GCF of 15 and 30 is 15 The GCF of 15, 20, 30 and 40 is 5.
The GCF is 2.
The GCF is 2.
The GCF is 10.
The GCF is 5.
The GCF is 5.
The GCF is 2.
30 = 3 x 1040 = 4 x 10The GCF of 30 and 40 is 10.30 x 4 = 12040 x 3 = 120The LCM of 30 and 40 is 120.
The GCF is 10.