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Add 21/2 and 10/5

1st number: 10 1/2, 2nd number: 2 0/5

21/2 + 10/5 is 25/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 5 is 10
  2. For the 1st fraction, since 2 × 5 = 10,
    21/2 = 21 × 5/2 × 5 = 105/10
  3. Likewise, for the 2nd fraction, since 5 × 2 = 10,
    10/5 = 10 × 2/5 × 2 = 20/10
  4. Add the two fractions:
    105/10 + 20/10 = 105 + 20/10 = 125/10
  5. After reducing the fraction, the answer is 25/2
  6. In mixed form: 121/2

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