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Add 54/42 and 20/80

1st number: 1 12/42, 2nd number: 20/80

54/42 + 20/80 is 43/28.

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,
    54/42 = 54 × 40/42 × 40 = 2160/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    20/80 = 20 × 21/80 × 21 = 420/1680
  4. Add the two like fractions:
    2160/1680 + 420/1680 = 2160 + 420/1680 = 2580/1680
  5. 2580/1680 simplified gives 43/28
  6. So, 54/42 + 20/80 = 43/28
    In mixed form: 115/28

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