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Add 16/42 and 28/40

16/42 + 28/40 is 227/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 40 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 42 × 20 = 840,
    16/42 = 16 × 20/42 × 20 = 320/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    28/40 = 28 × 21/40 × 21 = 588/840
  4. Add the two like fractions:
    320/840 + 588/840 = 320 + 588/840 = 908/840
  5. 908/840 simplified gives 227/210
  6. So, 16/42 + 28/40 = 227/210
    In mixed form: 117/210

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