The LCD is the LCM (least common multiple) of all the denominators. The LCM of 3, 4, 32, and 9 is 288, which is the multiple of the highest power of prime factors from all of the given numbers (25 x 32 = 288). Prime factors: 3 = 3; 4 = 22; 32 = 25; 9 = 32 (highest power shown in bold type) The given fractions with an LCM would be 96/288, 216/288, 45/288, and 256/288.
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At least two fractions are needed to determine a common denominator.
At least two fractions are required to answer this.
Divide both numbers by 3, their least common denominator. Result: 3 over 4
The LCD for 5/9 and 4/5 is 45.
Both of those fractions are in their simplest form, which means they have a GCF of 1. The least common denominator is 20.