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Add 1/21 and 5/4

1st number: 1/21, 2nd number: 1 1/4

1/21 + 5/4 is 109/84.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 21 × 4 = 84,
    1/21 = 1 × 4/21 × 4 = 4/84
  3. Likewise, for the 2nd fraction, since 4 × 21 = 84,
    5/4 = 5 × 21/4 × 21 = 105/84
  4. Add the two like fractions:
    4/84 + 105/84 = 4 + 105/84 = 109/84
  5. So, 1/21 + 5/4 = 109/84
    In mixed form: 125/84

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