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Add 21/10 and 84/56

1st number: 2 1/10, 2nd number: 1 28/56

21/10 + 84/56 is 18/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 56 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 10 × 28 = 280,
    21/10 = 21 × 28/10 × 28 = 588/280
  3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
    84/56 = 84 × 5/56 × 5 = 420/280
  4. Add the two like fractions:
    588/280 + 420/280 = 588 + 420/280 = 1008/280
  5. 1008/280 simplified gives 18/5
  6. So, 21/10 + 84/56 = 18/5
    In mixed form: 33/5

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