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Add 12/8 and 28/21

1st number: 1 4/8, 2nd number: 1 7/21

12/8 + 28/21 is 17/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 21 is 168
  2. For the 1st fraction, since 8 × 21 = 168,
    12/8 = 12 × 21/8 × 21 = 252/168
  3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
    28/21 = 28 × 8/21 × 8 = 224/168
  4. Add the two fractions:
    252/168 + 224/168 = 252 + 224/168 = 476/168
  5. 476/168 simplified gives 17/6
  6. So, 12/8 + 28/21 = 17/6
    In mixed form: 25/6

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