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Add 15/28 and 72/81

15/28 + 72/81 is 359/252.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 81 is 2268

    Next, find the equivalent fraction of both fractional numbers with denominator 2268
  2. For the 1st fraction, since 28 × 81 = 2268,
    15/28 = 15 × 81/28 × 81 = 1215/2268
  3. Likewise, for the 2nd fraction, since 81 × 28 = 2268,
    72/81 = 72 × 28/81 × 28 = 2016/2268
  4. Add the two like fractions:
    1215/2268 + 2016/2268 = 1215 + 2016/2268 = 3231/2268
  5. 3231/2268 simplified gives 359/252
  6. So, 15/28 + 72/81 = 359/252
    In mixed form: 1107/252

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