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Add 5/21 and 4/54

5/21 + 4/54 is 59/189.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 54 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 21 × 18 = 378,
    5/21 = 5 × 18/21 × 18 = 90/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    4/54 = 4 × 7/54 × 7 = 28/378
  4. Add the two like fractions:
    90/378 + 28/378 = 90 + 28/378 = 118/378
  5. 118/378 simplified gives 59/189
  6. So, 5/21 + 4/54 = 59/189

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