What is the least common denominator for the set of rational expressions? $$\frac { 4 } { 15 } + \frac { 19 } { 27 }$$
A) 15
B) 270
C) 135
D) 27
E) 150

Question

Quizplus · Accepted Answer

The least common denominator (LCD) is the least common multiple (LCM) of the denominators 15 and 27. The prime factorization of 15 is $3 \times 5$ and for 27 is $3^3$. The LCM is $3^3 \times 5 = 135$.

What Is the Least Common Denominator for the Set of Rational