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Add 12/8 and 1/21

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

12/8 + 1/21 is 65/42.

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,
    12/8 = 12 × 21/8 × 21 = 252/168
  3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
    1/21 = 1 × 8/21 × 8 = 8/168
  4. Add the two like fractions:
    252/168 + 8/168 = 252 + 8/168 = 260/168
  5. 260/168 simplified gives 65/42
  6. So, 12/8 + 1/21 = 65/42
    In mixed form: 123/42

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