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Subtract 7/80 from 28/18

1st number: 1 10/18, 2nd number: 7/80

28/18 - 7/80 is 1057/720.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 80 is 720
  2. For the 1st fraction, since 18 × 40 = 720,
    28/18 = 28 × 40/18 × 40 = 1120/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    7/80 = 7 × 9/80 × 9 = 63/720
  4. Subtract the two fractions:
    1120/720 - 63/720 = 1120 - 63/720 = 1057/720
  5. In mixed form: 1337/720

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