It is: 1449
GCD: 21
The Greatest Common Divisor (GCD) for 33 63 is 3
The Greatest Common Divisor (GCD) for 63 65 is 1
The Greatest Common Divisor/Denominator is 21
7
92 = 4 X 23; 252 = 4 X 63; and 23 and 63 have no common divisor, other than 1. Therefore, 4 is the greatest common factor of 92 and 252; that is, gcd(92, 252) = 4. By the bye, should you happen to recognise that 23 is a prime number, and that 23 is not a divisor of 63: then, it will be immediately apparent that 23 and 63 have no common divisor, other than 1. In other words, 23 has no divisor other than 1 and itself and is thus what we call a 'prime number'.
To simplify the fraction ( \frac{72}{63} ), we first find the greatest common divisor (GCD) of 72 and 63, which is 9. Dividing both the numerator and the denominator by their GCD, we get ( \frac{72 \div 9}{63 \div 9} = \frac{8}{7} ). Therefore, ( \frac{72}{63} ) in simplest form is ( \frac{8}{7} ).
4 20 = 22 x 5 24 = 23 x 3 gcd = 22 = 4
The Greatest Common Divisor/Denominator is 23
63/23 cannot be simplified further.
63/69 = 21/23
The Least Common Multiple (LCM) for 23 63 is 1,449