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Add 7/18 and 1/21

7/18 + 1/21 is 55/126.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 21 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 18 × 7 = 126,
    7/18 = 7 × 7/18 × 7 = 49/126
  3. Likewise, for the 2nd fraction, since 21 × 6 = 126,
    1/21 = 1 × 6/21 × 6 = 6/126
  4. Add the two like fractions:
    49/126 + 6/126 = 49 + 6/126 = 55/126
  5. So, 7/18 + 1/21 = 55/126

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