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Add 40/15 and 21/28

1st number: 2 10/15, 2nd number: 21/28

40/15 + 21/28 is 41/12.

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,
    40/15 = 40 × 28/15 × 28 = 1120/420
  3. Likewise, for the 2nd fraction, since 28 × 15 = 420,
    21/28 = 21 × 15/28 × 15 = 315/420
  4. Add the two like fractions:
    1120/420 + 315/420 = 1120 + 315/420 = 1435/420
  5. 1435/420 simplified gives 41/12
  6. So, 40/15 + 21/28 = 41/12
    In mixed form: 35/12

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