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Add 3/42 and 3/80

3/42 + 3/80 is 61/560.

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,
    3/42 = 3 × 40/42 × 40 = 120/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    3/80 = 3 × 21/80 × 21 = 63/1680
  4. Add the two like fractions:
    120/1680 + 63/1680 = 120 + 63/1680 = 183/1680
  5. 183/1680 simplified gives 61/560
  6. So, 3/42 + 3/80 = 61/560

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