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Add 3/5 and 6/21

3/5 + 6/21 is 31/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 21 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 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,
    6/21 = 6 × 5/21 × 5 = 30/105
  4. Add the two like fractions:
    63/105 + 30/105 = 63 + 30/105 = 93/105
  5. 93/105 simplified gives 31/35
  6. So, 3/5 + 6/21 = 31/35

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