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Add 56/60 and 15/21

56/60 + 15/21 is 173/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 21 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 60 × 7 = 420,
    56/60 = 56 × 7/60 × 7 = 392/420
  3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
    15/21 = 15 × 20/21 × 20 = 300/420
  4. Add the two like fractions:
    392/420 + 300/420 = 392 + 300/420 = 692/420
  5. 692/420 simplified gives 173/105
  6. So, 56/60 + 15/21 = 173/105
    In mixed form: 168/105

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