The procedure to convert the mixed fraction into an improper fraction is:
Step 1: Multiply the whole number by the denominator value
Step 2: Now, add the obtained value with the numerator value, which is the numerator value of an improper fraction
Step 3: Write down the same denominator value given in the proper fraction
Step 4: Finally, a new fraction is obtained, which is called an improper fraction.
21/4 as improper fraction
Given Mixed fraction is 21/4
Step 1: Multiply 2 by 4: 4 × 2 = 8
Step 2: Add 8 with 1: 8+1 = 9 (New numerator value).
Hence, the improper fraction is 9/4.
21/4 as improper fraction is 9/4