Simplify:

(a) $ \frac{42}{84} $

(b) $ \frac{68}{85} $

Given:

Given fractions are 

 (a) \( \frac{42}{84} \)

(b) \( \frac{68}{85} \)

To do:

We have to simplify the given fractions.

Solution:

(a) $\frac{42}{84}=\frac{42\times1}{42\times2}$

$=\frac{1}{2}$.

(b) $\frac{68}{85}=\frac{17\times4}{17\times5}$

$=\frac{4}{5}$.