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Add 6/28 and 18/21

6/28 + 18/21 is 15/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 21 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 28 × 3 = 84,
    6/28 = 6 × 3/28 × 3 = 18/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    18/21 = 18 × 4/21 × 4 = 72/84
  4. Add the two like fractions:
    18/84 + 72/84 = 18 + 72/84 = 90/84
  5. 90/84 simplified gives 15/14
  6. So, 6/28 + 18/21 = 15/14
    In mixed form: 11/14

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