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Add 6/42 and 21/54

6/42 + 21/54 is 67/126.

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,
    6/42 = 6 × 9/42 × 9 = 54/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    21/54 = 21 × 7/54 × 7 = 147/378
  4. Add the two like fractions:
    54/378 + 147/378 = 54 + 147/378 = 201/378
  5. 201/378 simplified gives 67/126
  6. So, 6/42 + 21/54 = 67/126

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