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Add 18/42 and 40/49

18/42 + 40/49 is 61/49.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 49 is 294

    Next, find the equivalent fraction of both fractional numbers with denominator 294
  2. For the 1st fraction, since 42 × 7 = 294,
    18/42 = 18 × 7/42 × 7 = 126/294
  3. Likewise, for the 2nd fraction, since 49 × 6 = 294,
    40/49 = 40 × 6/49 × 6 = 240/294
  4. Add the two like fractions:
    126/294 + 240/294 = 126 + 240/294 = 366/294
  5. 366/294 simplified gives 61/49
  6. So, 18/42 + 40/49 = 61/49
    In mixed form: 112/49

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