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Subtract 45/40 from 1/2

1st number: 1/2, 2nd number: 1 5/40

1/2 - 45/40 is -5/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 40 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 2 × 20 = 40,
    1/2 = 1 × 20/2 × 20 = 20/40
  3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
    45/40 = 45 × 1/40 × 1 = 45/40
  4. Subtract the two like fractions:
    20/40 - 45/40 = 20 - 45/40 = -25/40
  5. After reducing the fraction, the answer is -5/8

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