Add 15/28 and 21/27
15/28 + 21/27 is 331/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
15/28 = 15 × 27/28 × 27 = 405/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
21/27 = 21 × 28/27 × 28 = 588/756 - Add the two like fractions:
405/756 + 588/756 = 405 + 588/756 = 993/756 - 993/756 simplified gives 331/252
- So, 15/28 + 21/27 = 331/252
In mixed form: 179/252
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