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Add 1/7 and 21/18

1st number: 1/7, 2nd number: 1 3/18

1/7 + 21/18 is 55/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 18 is 126
  2. For the 1st fraction, since 7 × 18 = 126,
    1/7 = 1 × 18/7 × 18 = 18/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    21/18 = 21 × 7/18 × 7 = 147/126
  4. Add the two fractions:
    18/126 + 147/126 = 18 + 147/126 = 165/126
  5. 165/126 simplified gives 55/42
  6. So, 1/7 + 21/18 = 55/42
    In mixed form: 113/42

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