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Add 15/21 and 6/16

15/21 + 6/16 is 61/56.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 16 is 336

    Next, find the equivalent fraction of both fractional numbers with denominator 336
  2. For the 1st fraction, since 21 × 16 = 336,
    15/21 = 15 × 16/21 × 16 = 240/336
  3. Likewise, for the 2nd fraction, since 16 × 21 = 336,
    6/16 = 6 × 21/16 × 21 = 126/336
  4. Add the two like fractions:
    240/336 + 126/336 = 240 + 126/336 = 366/336
  5. 366/336 simplified gives 61/56
  6. So, 15/21 + 6/16 = 61/56
    In mixed form: 15/56

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