Convert into mixed fractions : `21/4`

Explanation

To convert the improper fraction \( \frac{21}{4} \) into a mixed fraction, follow these steps:

### Step 1: Divide the numerator by the denominator
We start by dividing the numerator (21) by the denominator (4).

\[ 21 \div 4 = 5 \quad \text{(whole number part)} \]
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