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Add 56/15 and 20/28

1st number: 3 11/15, 2nd number: 20/28

56/15 + 20/28 is 467/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 28 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 15 × 28 = 420,
    56/15 = 56 × 28/15 × 28 = 1568/420
  3. Likewise, for the 2nd fraction, since 28 × 15 = 420,
    20/28 = 20 × 15/28 × 15 = 300/420
  4. Add the two like fractions:
    1568/420 + 300/420 = 1568 + 300/420 = 1868/420
  5. 1868/420 simplified gives 467/105
  6. So, 56/15 + 20/28 = 467/105
    In mixed form: 447/105

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