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Add 21/4 and 21/84

1st number: 5 1/4, 2nd number: 21/84

21/4 + 21/84 is 11/2.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 4 × 21 = 84,
    21/4 = 21 × 21/4 × 21 = 441/84
  3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
    21/84 = 21 × 1/84 × 1 = 21/84
  4. Add the two like fractions:
    441/84 + 21/84 = 441 + 21/84 = 462/84
  5. 462/84 simplified gives 11/2
  6. So, 21/4 + 21/84 = 11/2
    In mixed form: 51/2

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