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Add 3/5 and 28/21

1st number: 3/5, 2nd number: 1 7/21

3/5 + 28/21 is 29/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 21 is 105
  2. For the 1st fraction, since 5 × 21 = 105,
    3/5 = 3 × 21/5 × 21 = 63/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    28/21 = 28 × 5/21 × 5 = 140/105
  4. Add the two fractions:
    63/105 + 140/105 = 63 + 140/105 = 203/105
  5. 203/105 simplified gives 29/15
  6. So, 3/5 + 28/21 = 29/15
    In mixed form: 114/15

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