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Add 4/5 and 6/21

4/5 + 6/21 is 38/35.

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,
    4/5 = 4 × 21/5 × 21 = 84/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    6/21 = 6 × 5/21 × 5 = 30/105
  4. Add the two fractions:
    84/105 + 30/105 = 84 + 30/105 = 114/105
  5. After reducing the fraction, the answer is 38/35
  6. In mixed form: 13/35

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