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Add 1/15 and 21/56

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

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 56 is 840
  2. For the 1st fraction, since 15 × 56 = 840,
    1/15 = 1 × 56/15 × 56 = 56/840
  3. Likewise, for the 2nd fraction, since 56 × 15 = 840,
    21/56 = 21 × 15/56 × 15 = 315/840
  4. Add the two fractions:
    56/840 + 315/840 = 56 + 315/840 = 371/840
  5. After reducing the fraction, the answer is 53/120

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