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Add 56/15 and 21/8

1st number: 3 11/15, 2nd number: 2 5/8

56/15 + 21/8 is 763/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 8 is 120
  2. For the 1st fraction, since 15 × 8 = 120,
    56/15 = 56 × 8/15 × 8 = 448/120
  3. Likewise, for the 2nd fraction, since 8 × 15 = 120,
    21/8 = 21 × 15/8 × 15 = 315/120
  4. Add the two fractions:
    448/120 + 315/120 = 448 + 315/120 = 763/120
  5. So, 56/15 + 21/8 = 763/120
    In mixed form: 643/120

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