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Add 7/18 and 54/21

1st number: 7/18, 2nd number: 2 12/21

7/18 + 54/21 is 373/126.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 21 is 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,
    54/21 = 54 × 6/21 × 6 = 324/126
  4. Add the two fractions:
    49/126 + 324/126 = 49 + 324/126 = 373/126
  5. So, 7/18 + 54/21 = 373/126
    In mixed form: 2121/126

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