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Add 14/12 and 18/21

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

14/12 + 18/21 is 85/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 21 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 12 × 7 = 84,
    14/12 = 14 × 7/12 × 7 = 98/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    18/21 = 18 × 4/21 × 4 = 72/84
  4. Add the two like fractions:
    98/84 + 72/84 = 98 + 72/84 = 170/84
  5. 170/84 simplified gives 85/42
  6. So, 14/12 + 18/21 = 85/42
    In mixed form: 21/42

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