LCD of 13 and 15 = 195
Step-by-step explanation:
To find the least common denominator, we will find the lowest factor common to both 13 and 15
Prime factorization of 13 = 1 × 13
Prime factorization of 15 = 3 × 5
Both do not have a common factor between them
The LCD = 1 × 3 × 5 × 13
LCD of 13 and 15 = 195