Question

Which pair of fractions and mixed numbers have a common denominator of 42?

A. 3 2/3 and 5/7

B. 2 1/6 and 3/4

C. 5 3/14 and 1/5

D. 1 4/7 and 5/8

Answer 1

the answer is b because 6 and 4s common denominator is 24

Answer 2

A. 3 2/3 and 5/7

Explanation:

The pair of fraction that has the same denominator of 42 are 3 2/3 and 5/7.

First fraction 3 2/3 = 11/3

Second fraction = 5/7

If we look at the denominator of both fractions i.e 3 and 7, they are both factor of 42. Since this two values can easily go in 42 without remainder, then we can conclude that both fraction initially has a denominator of 42.