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Add 16/18 and 21/42

16/18 + 21/42 is 25/18.

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,
    16/18 = 16 × 7/18 × 7 = 112/126
  3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
    21/42 = 21 × 3/42 × 3 = 63/126
  4. Add the two like fractions:
    112/126 + 63/126 = 112 + 63/126 = 175/126
  5. 175/126 simplified gives 25/18
  6. So, 16/18 + 21/42 = 25/18
    In mixed form: 17/18

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