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Add 84/8 and 36/21

1st number: 10 4/8, 2nd number: 1 15/21

84/8 + 36/21 is 171/14.

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,
    36/21 = 36 × 8/21 × 8 = 288/168
  4. Add the two like fractions:
    1764/168 + 288/168 = 1764 + 288/168 = 2052/168
  5. 2052/168 simplified gives 171/14
  6. So, 84/8 + 36/21 = 171/14
    In mixed form: 123/14

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