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Add 10/21 and 7/18

10/21 + 7/18 is 109/126.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 18 is 126
  2. For the 1st fraction, since 21 × 6 = 126,
    10/21 = 10 × 6/21 × 6 = 60/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    7/18 = 7 × 7/18 × 7 = 49/126
  4. Add the two fractions:
    60/126 + 49/126 = 60 + 49/126 = 109/126

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