Question

What is 84/189 simplified?

Answer 1

84 / 189 = ?

1. Divide fraction's both numerator and denominator by their greatest common factor, gcf (also called gcd - divisor). 
a / b = (a : gcf(a; b)) / (b : gcf(a; b)); 
Integer numbers prime factorization: 
84 = 22 * 3 * 7; 
189 = 33 * 7; 

2. gcf, gcd: Take all the common prime factors, by the lowest powers. 
gcf, gcd(84; 189) = 3 * 7 = 21;84 / 189 = 
(22 * 3 * 7) / (33 * 7) = 
((22 * 3 * 7) : (3 * 7)) / ((33 * 7) : (3 * 7)) = 
(84 : 21) / (189 : 21) = 4/9

Answer 2

89/189 simplified is 4/9