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Add 84/8 and 28/21

1st number: 10 4/8, 2nd number: 1 7/21

84/8 + 28/21 is 71/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 21 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 8 × 21 = 168,
    84/8 = 84 × 21/8 × 21 = 1764/168
  3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
    28/21 = 28 × 8/21 × 8 = 224/168
  4. Add the two like fractions:
    1764/168 + 224/168 = 1764 + 224/168 = 1988/168
  5. 1988/168 simplified gives 71/6
  6. So, 84/8 + 28/21 = 71/6
    In mixed form: 115/6

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