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Add 21/16 and 15/9

1st number: 1 5/16, 2nd number: 1 6/9

21/16 + 15/9 is 143/48.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 9 is 144

    Next, find the equivalent fraction of both fractional numbers with denominator 144
  2. For the 1st fraction, since 16 × 9 = 144,
    21/16 = 21 × 9/16 × 9 = 189/144
  3. Likewise, for the 2nd fraction, since 9 × 16 = 144,
    15/9 = 15 × 16/9 × 16 = 240/144
  4. Add the two like fractions:
    189/144 + 240/144 = 189 + 240/144 = 429/144
  5. 429/144 simplified gives 143/48
  6. So, 21/16 + 15/9 = 143/48
    In mixed form: 247/48

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