Theory:

Mixed fractions contain a whole number and a proper fraction. They can also be represented as an improper fraction.
Example:
345; where \(3\) is a whole numberand \(4/5\) is a proper fraction.
Converting mixed fraction to improper fraction:
To convert a mixed fraction to improper fraction, the following steps are to be followed.
 
Step 1: Multiply the denominator of the proper fraction and whole number and add it with the numerator of the fraction to get the numerator of the improper fraction.
  
Step 2: Denominator of an improper fraction is the same as the denominator of a mixed fraction.
ezgif.com-gif-maker (11).gif
Example:
Convert 345 to an improper fraction.
 
Step 1: Numerator of improper fraction \(=\) (denominator of the proper fraction \(×\) whole number) \(+\) numerator of a proper fraction.
 
\(= 5 × 3 = 15 + 4 = 19\).
 
Step 2: Denominator of improper fraction \(=\) denominator of the mixed fraction.
 
The denominator of improper fraction \(= 5\).
 
Improper fraction \(= 19 / 5\).
 
Thus, 345 \(= 19 / 5\).