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Add 15/80 and 80/81

15/80 + 80/81 is 1523/1296.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 81 is 6480

    Next, find the equivalent fraction of both fractional numbers with denominator 6480
  2. For the 1st fraction, since 80 × 81 = 6480,
    15/80 = 15 × 81/80 × 81 = 1215/6480
  3. Likewise, for the 2nd fraction, since 81 × 80 = 6480,
    80/81 = 80 × 80/81 × 80 = 6400/6480
  4. Add the two like fractions:
    1215/6480 + 6400/6480 = 1215 + 6400/6480 = 7615/6480
  5. 7615/6480 simplified gives 1523/1296
  6. So, 15/80 + 80/81 = 1523/1296
    In mixed form: 1227/1296

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