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Subtract 90/8 from 3/28

1st number: 3/28, 2nd number: 11 2/8

3/28 - 90/8 is -78/7.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 56
  2. For the 1st fraction, since 28 × 2 = 56,
    3/28 = 3 × 2/28 × 2 = 6/56
  3. Likewise, for the 2nd fraction, since 8 × 7 = 56,
    90/8 = 90 × 7/8 × 7 = 630/56
  4. Subtract the two like fractions:
    6/56 - 630/56 = 6 - 630/56 = -624/56
  5. After reducing the fraction, the answer is -78/7

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