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Subtract 1/80 from 70/45

1st number: 1 25/45, 2nd number: 1/80

70/45 - 1/80 is 1111/720.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 80 is 720
  2. For the 1st fraction, since 45 × 16 = 720,
    70/45 = 70 × 16/45 × 16 = 1120/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    1/80 = 1 × 9/80 × 9 = 9/720
  4. Subtract the two fractions:
    1120/720 - 9/720 = 1120 - 9/720 = 1111/720
  5. In mixed form: 1391/720

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