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Add 21/2 and 9/21

1st number: 10 1/2, 2nd number: 9/21

21/2 + 9/21 is 153/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 21 is 42
  2. For the 1st fraction, since 2 × 21 = 42,
    21/2 = 21 × 21/2 × 21 = 441/42
  3. Likewise, for the 2nd fraction, since 21 × 2 = 42,
    9/21 = 9 × 2/21 × 2 = 18/42
  4. Add the two fractions:
    441/42 + 18/42 = 441 + 18/42 = 459/42
  5. After reducing the fraction, the answer is 153/14
  6. In mixed form: 1013/14

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