Add 9/4 and 21/40
1st number: 2 1/4, 2nd number: 21/40
9/4 + 21/40 is 111/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 4 × 10 = 40,
9/4 = 9 × 10/4 × 10 = 90/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
21/40 = 21 × 1/40 × 1 = 21/40 - Add the two like fractions:
90/40 + 21/40 = 90 + 21/40 = 111/40 - So, 9/4 + 21/40 = 111/40
In mixed form: 231/40
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