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Add 1/3 and 3/21

1/3 + 3/21 is 10/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 21 is 21
  2. For the 1st fraction, since 3 × 7 = 21,
    1/3 = 1 × 7/3 × 7 = 7/21
  3. Likewise, for the 2nd fraction, since 21 × 1 = 21,
    3/21 = 3 × 1/21 × 1 = 3/21
  4. Add the two fractions:
    7/21 + 3/21 = 7 + 3/21 = 10/21

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