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Add 16/15 and 1/21

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

16/15 + 1/21 is 39/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 21 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 15 × 7 = 105,
    16/15 = 16 × 7/15 × 7 = 112/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    1/21 = 1 × 5/21 × 5 = 5/105
  4. Add the two like fractions:
    112/105 + 5/105 = 112 + 5/105 = 117/105
  5. 117/105 simplified gives 39/35
  6. So, 16/15 + 1/21 = 39/35
    In mixed form: 14/35

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