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Add 15/16 and 20/42

15/16 + 20/42 is 475/336.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 42 is 336
  2. For the 1st fraction, since 16 × 21 = 336,
    15/16 = 15 × 21/16 × 21 = 315/336
  3. Likewise, for the 2nd fraction, since 42 × 8 = 336,
    20/42 = 20 × 8/42 × 8 = 160/336
  4. Add the two fractions:
    315/336 + 160/336 = 315 + 160/336 = 475/336
  5. So, 15/16 + 20/42 = 475/336
    In mixed form: 1139/336

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