EXPLANATION
The prime factorization of 4 is: 2x2
The prime factorization of 6 is: 2x3
Multiply each factor the greatest number of times it occurs in either 4 or 6
= 2x2x3
Multiply the numbers:
=12
The least common denominator is 12:
So, the fractions should be obtained by setting 12 as denominator:
Considering the fraction 3/4, multiplying 4 by 3 we can get 12, so the factor is 3:

Multiplying 1/6 by 2 will give us the right fraction:

The equavalent fractions with a common denominator are:
9/12 and 2/12