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Add 10/21 and 28/8

1st number: 10/21, 2nd number: 3 4/8

10/21 + 28/8 is 167/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 8 is 168
  2. For the 1st fraction, since 21 × 8 = 168,
    10/21 = 10 × 8/21 × 8 = 80/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    28/8 = 28 × 21/8 × 21 = 588/168
  4. Add the two fractions:
    80/168 + 588/168 = 80 + 588/168 = 668/168
  5. 668/168 simplified gives 167/42
  6. So, 10/21 + 28/8 = 167/42
    In mixed form: 341/42

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