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Add 15/18 and 18/42

15/18 + 18/42 is 53/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 42 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 18 × 7 = 126,
    15/18 = 15 × 7/18 × 7 = 105/126
  3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
    18/42 = 18 × 3/42 × 3 = 54/126
  4. Add the two like fractions:
    105/126 + 54/126 = 105 + 54/126 = 159/126
  5. 159/126 simplified gives 53/42
  6. So, 15/18 + 18/42 = 53/42
    In mixed form: 111/42

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