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Subtract 9/8 from 45/20

1st number: 2 5/20, 2nd number: 1 1/8

45/20 - 9/8 is 9/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 8 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 20 × 2 = 40,
    45/20 = 45 × 2/20 × 2 = 90/40
  3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
    9/8 = 9 × 5/8 × 5 = 45/40
  4. Subtract the two like fractions:
    90/40 - 45/40 = 90 - 45/40 = 45/40
  5. After reducing the fraction, the answer is 9/8
  6. In mixed form: 11/8

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