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Add 15/40 and 48/81

15/40 + 48/81 is 209/216.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 81 is 3240

    Next, find the equivalent fraction of both fractional numbers with denominator 3240
  2. For the 1st fraction, since 40 × 81 = 3240,
    15/40 = 15 × 81/40 × 81 = 1215/3240
  3. Likewise, for the 2nd fraction, since 81 × 40 = 3240,
    48/81 = 48 × 40/81 × 40 = 1920/3240
  4. Add the two like fractions:
    1215/3240 + 1920/3240 = 1215 + 1920/3240 = 3135/3240
  5. 3135/3240 simplified gives 209/216
  6. So, 15/40 + 48/81 = 209/216

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