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Add 9/16 and 15/21

9/16 + 15/21 is 143/112.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 21 is 336

    Next, find the equivalent fraction of both fractional numbers with denominator 336
  2. For the 1st fraction, since 16 × 21 = 336,
    9/16 = 9 × 21/16 × 21 = 189/336
  3. Likewise, for the 2nd fraction, since 21 × 16 = 336,
    15/21 = 15 × 16/21 × 16 = 240/336
  4. Add the two like fractions:
    189/336 + 240/336 = 189 + 240/336 = 429/336
  5. 429/336 simplified gives 143/112
  6. So, 9/16 + 15/21 = 143/112
    In mixed form: 131/112

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