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Add 8/42 and 5/80

8/42 + 5/80 is 85/336.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 80 is 1680

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 42 × 40 = 1680,
    8/42 = 8 × 40/42 × 40 = 320/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    5/80 = 5 × 21/80 × 21 = 105/1680
  4. Add the two like fractions:
    320/1680 + 105/1680 = 320 + 105/1680 = 425/1680
  5. 425/1680 simplified gives 85/336
  6. So, 8/42 + 5/80 = 85/336

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