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Add 54/40 and 42/28

1st number: 1 14/40, 2nd number: 1 14/28

54/40 + 42/28 is 57/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 28 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 40 × 7 = 280,
    54/40 = 54 × 7/40 × 7 = 378/280
  3. Likewise, for the 2nd fraction, since 28 × 10 = 280,
    42/28 = 42 × 10/28 × 10 = 420/280
  4. Add the two like fractions:
    378/280 + 420/280 = 378 + 420/280 = 798/280
  5. 798/280 simplified gives 57/20
  6. So, 54/40 + 42/28 = 57/20
    In mixed form: 217/20

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