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Add 18/42 and 18/54

18/42 + 18/54 is 16/21.

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,
    18/42 = 18 × 9/42 × 9 = 162/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    18/54 = 18 × 7/54 × 7 = 126/378
  4. Add the two like fractions:
    162/378 + 126/378 = 162 + 126/378 = 288/378
  5. 288/378 simplified gives 16/21
  6. So, 18/42 + 18/54 = 16/21

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