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Subtract 90/56 from 1/45

1st number: 1/45, 2nd number: 1 34/56

1/45 - 90/56 is -1997/1260.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 56 is 2520

    Next, find the equivalent fraction of both fractional numbers with denominator 2520
  2. For the 1st fraction, since 45 × 56 = 2520,
    1/45 = 1 × 56/45 × 56 = 56/2520
  3. Likewise, for the 2nd fraction, since 56 × 45 = 2520,
    90/56 = 90 × 45/56 × 45 = 4050/2520
  4. Subtract the two like fractions:
    56/2520 - 4050/2520 = 56 - 4050/2520 = -3994/2520
  5. After reducing the fraction, the answer is -1997/1260

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