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Add 3/4 and 16/21

3/4 + 16/21 is 127/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 21 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 4 × 21 = 84,
    3/4 = 3 × 21/4 × 21 = 63/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    16/21 = 16 × 4/21 × 4 = 64/84
  4. Add the two like fractions:
    63/84 + 64/84 = 63 + 64/84 = 127/84
  5. So, 3/4 + 16/21 = 127/84
    In mixed form: 143/84

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