63 = 3 x 3 x 7, 48 = 2 x 2 x 2 x 2 x 3
Common factors are 1 and 3
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The common factor of 63 and 71 is and 1.
Since 9 is a factor of 63, all of its factors are common.
To find the GCF of two numbers you first need to split them into their prime factors. In this case: 63 = 3x3x7 77 = 7x11 The next step is identifying any common factors. The only common prime factor is 7. Therefore the GCF of 63 and 77 is 7.
A fraction can be simplified if the numerator and denominator have any common factors. In this case, the factors of the numerator (16) are 2x2x2x2. The factors of the denominator (63) are 3x3x7. There are no common factors. Therefore, the fraction 16/63 is already in its simplest form and cannot be reduced.
The common factors of 63 and 49 are 1 and 7.