Add 81/28 and 2/15
1st number: 2 25/28, 2nd number: 2/15
81/28 + 2/15 is 1271/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
81/28 = 81 × 15/28 × 15 = 1215/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
2/15 = 2 × 28/15 × 28 = 56/420 - Add the two like fractions:
1215/420 + 56/420 = 1215 + 56/420 = 1271/420 - So, 81/28 + 2/15 = 1271/420
In mixed form: 311/420
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