Question

Sydni has 2 fractions and she is confused about how to find a common denominator. The fractions are 2/3 and 3/5. Explain how you would tell Sydni how to determine the least common denominator.

Answer 1

By finding the least common multiples of the denominators of the two fractions

Which is 15

Explanation:

Fraction A = 2/3

Fraction B = 3/5

To find the least common denominator of the two fractions,

Fraction A = 2/3 and Fraction B = 3/5, Sydni will have to find the least common multiples of denominator 3 and denominator 5.

Multiples of denominator 3 = 6, 9, 12, 15, 18, 21

Multiples of denominator 5 = 10, 15, 20, 25

The least common multiples of the two denominators is 15

Therefore, the common denominator of Fraction A = 2/3 and Fraction B = 3/5 is 15