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Add 21/56 and 1/15

21/56 + 1/15 is 53/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 15 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 56 × 15 = 840,
    21/56 = 21 × 15/56 × 15 = 315/840
  3. Likewise, for the 2nd fraction, since 15 × 56 = 840,
    1/15 = 1 × 56/15 × 56 = 56/840
  4. Add the two like fractions:
    315/840 + 56/840 = 315 + 56/840 = 371/840
  5. 371/840 simplified gives 53/120
  6. So, 21/56 + 1/15 = 53/120

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