The least common denominator of fractions is the least common multiple of their denominators. The least common multiple of 5 and 4 is their product (20), because they have no common factors. You need to rename each fraction using 20 as a denominator.
To find the numerator, multiply each fraction by 20.
3/5*20 = 60/5 = 12
1/4*20 = 20/4 = 5
Your fractions are
3/5 = 12/20 (this is equivalent to (3/5)*(4/4))
1/4 = 5/20 (this is equivalent to (1/4)*(5/5))
To find the numerator, multiply each fraction by 20.
3/5*20 = 60/5 = 12
1/4*20 = 20/4 = 5
Your fractions are
3/5 = 12/20 (this is equivalent to (3/5)*(4/4))
1/4 = 5/20 (this is equivalent to (1/4)*(5/5))