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Subtract 81/28 from 42/8

1st number: 5 2/8, 2nd number: 2 25/28

42/8 - 81/28 is 33/14.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 28 is 56

    Next, find the equivalent fraction of both fractional numbers with denominator 56
  2. For the 1st fraction, since 8 × 7 = 56,
    42/8 = 42 × 7/8 × 7 = 294/56
  3. Likewise, for the 2nd fraction, since 28 × 2 = 56,
    81/28 = 81 × 2/28 × 2 = 162/56
  4. Subtract the two like fractions:
    294/56 - 162/56 = 294 - 162/56 = 132/56
  5. After reducing the fraction, the answer is 33/14
  6. In mixed form: 25/14

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