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Add 1/3 and 2/7

1/3 + 2/7 is 13/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 7 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 7 × 3 = 21,
    2/7 = 2 × 3/7 × 3 = 6/21
  4. Add the two fractions:
    7/21 + 6/21 = 7 + 6/21 = 13/21

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