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Add 21/56 and 27/15

1st number: 21/56, 2nd number: 1 12/15

21/56 + 27/15 is 87/40.

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,
    27/15 = 27 × 56/15 × 56 = 1512/840
  4. Add the two like fractions:
    315/840 + 1512/840 = 315 + 1512/840 = 1827/840
  5. 1827/840 simplified gives 87/40
  6. So, 21/56 + 27/15 = 87/40
    In mixed form: 27/40

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