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Subtract 18/7 from 90/56

1st number: 1 34/56, 2nd number: 2 4/7

90/56 - 18/7 is -27/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 7 is 56

    Next, find the equivalent fraction of both fractional numbers with denominator 56
  2. For the 1st fraction, since 56 × 1 = 56,
    90/56 = 90 × 1/56 × 1 = 90/56
  3. Likewise, for the 2nd fraction, since 7 × 8 = 56,
    18/7 = 18 × 8/7 × 8 = 144/56
  4. Subtract the two like fractions:
    90/56 - 144/56 = 90 - 144/56 = -54/56
  5. After reducing the fraction, the answer is -27/28

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