Question

how is -28/42 expressed as rational number with numerator 4​

Answer 1

$\sf\huge\bold{Answer:}$

Given :

$\tt\ = \frac{ - 28}{ \: \: \: 42}$

To find :

$\tt\ = \frac{ - 28}{ \: \: \: 42} \: with \: numerator \: as \: 4$

Solution :

Step 1 : Placing negative sign in denominator

$:⟶ \tt\ \frac{ - 28}{ \: \: \: 42} = \frac{ \: \: \: \: 28}{ - 42}$

Step 2 : Converting fraction to lower term

$\tt\ :⟶ \frac{ \: \: \: 28}{ - 42} \div \frac{7}{7} = \frac{ \: \: \: 4}{ - 6}$

• Since, we got 4 in numerator there is no need to simplify further.

$\tt\ = \cancel{ \frac{ \: \: \: 28 }{ - 42} }$

Required fraction is

$\tt\purple{ = \frac{ \: \: \: \: 4}{ - 6} }$