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Subtract 3/80 from 42/25

1st number: 1 17/25, 2nd number: 3/80

42/25 - 3/80 is 657/400.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 80 is 400

    Next, find the equivalent fraction of both fractional numbers with denominator 400
  2. For the 1st fraction, since 25 × 16 = 400,
    42/25 = 42 × 16/25 × 16 = 672/400
  3. Likewise, for the 2nd fraction, since 80 × 5 = 400,
    3/80 = 3 × 5/80 × 5 = 15/400
  4. Subtract the two like fractions:
    672/400 - 15/400 = 672 - 15/400 = 657/400
  5. In mixed form: 1257/400

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