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Add 5/42 and 16/80

5/42 + 16/80 is 67/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 80 is 1680
  2. For the 1st fraction, since 42 × 40 = 1680,
    5/42 = 5 × 40/42 × 40 = 200/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    16/80 = 16 × 21/80 × 21 = 336/1680
  4. Add the two fractions:
    200/1680 + 336/1680 = 200 + 336/1680 = 536/1680
  5. 536/1680 simplified gives 67/210
  6. So, 5/42 + 16/80 = 67/210

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