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Add 16/18 and 9/21

16/18 + 9/21 is 83/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 21 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 21 × 6 = 126,
    9/21 = 9 × 6/21 × 6 = 54/126
  4. Add the two like fractions:
    112/126 + 54/126 = 112 + 54/126 = 166/126
  5. 166/126 simplified gives 83/63
  6. So, 16/18 + 9/21 = 83/63
    In mixed form: 120/63

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