Question

Express 4/7 as a rational number with denominator 21

Answer 1

Answer:

Step-by-step explanation:

Given:

A rational number=  

We have to express the  as a rational number with denominator 21.

Solution:

A rational number =  

Here, numerator = 4 and denominator = 7

∵ 7 = 3 × 7 = 21

Multiplying numerator and denominator by 3, we get

A rational number =  

=  

∴  as a rational number with denominator 21 =  

Hence,   as a rational number with denominator 21 = .