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Add 28/54 and 21/49

28/54 + 21/49 is 179/189.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 49 is 2646

    Next, find the equivalent fraction of both fractional numbers with denominator 2646
  2. For the 1st fraction, since 54 × 49 = 2646,
    28/54 = 28 × 49/54 × 49 = 1372/2646
  3. Likewise, for the 2nd fraction, since 49 × 54 = 2646,
    21/49 = 21 × 54/49 × 54 = 1134/2646
  4. Add the two like fractions:
    1372/2646 + 1134/2646 = 1372 + 1134/2646 = 2506/2646
  5. 2506/2646 simplified gives 179/189
  6. So, 28/54 + 21/49 = 179/189

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