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Add 20/42 and 4/54

20/42 + 4/54 is 104/189.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 54 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 42 × 9 = 378,
    20/42 = 20 × 9/42 × 9 = 180/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    4/54 = 4 × 7/54 × 7 = 28/378
  4. Add the two like fractions:
    180/378 + 28/378 = 180 + 28/378 = 208/378
  5. 208/378 simplified gives 104/189
  6. So, 20/42 + 4/54 = 104/189

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