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Add 20/21 and 8/16

20/21 + 8/16 is 61/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 16 is 336

    Next, find the equivalent fraction of both fractional numbers with denominator 336
  2. For the 1st fraction, since 21 × 16 = 336,
    20/21 = 20 × 16/21 × 16 = 320/336
  3. Likewise, for the 2nd fraction, since 16 × 21 = 336,
    8/16 = 8 × 21/16 × 21 = 168/336
  4. Add the two like fractions:
    320/336 + 168/336 = 320 + 168/336 = 488/336
  5. 488/336 simplified gives 61/42
  6. So, 20/21 + 8/16 = 61/42
    In mixed form: 119/42

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