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Subtract 1/20 from 25/8

1st number: 3 1/8, 2nd number: 1/20

25/8 - 1/20 is 123/40.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 8 × 5 = 40,
    25/8 = 25 × 5/8 × 5 = 125/40
  3. Likewise, for the 2nd fraction, since 20 × 2 = 40,
    1/20 = 1 × 2/20 × 2 = 2/40
  4. Subtract the two like fractions:
    125/40 - 2/40 = 125 - 2/40 = 123/40
  5. In mixed form: 33/40

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