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Add 24/28 and 21/54

24/28 + 21/54 is 157/126.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 54 is 756

    Next, find the equivalent fraction of both fractional numbers with denominator 756
  2. For the 1st fraction, since 28 × 27 = 756,
    24/28 = 24 × 27/28 × 27 = 648/756
  3. Likewise, for the 2nd fraction, since 54 × 14 = 756,
    21/54 = 21 × 14/54 × 14 = 294/756
  4. Add the two like fractions:
    648/756 + 294/756 = 648 + 294/756 = 942/756
  5. 942/756 simplified gives 157/126
  6. So, 24/28 + 21/54 = 157/126
    In mixed form: 131/126

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