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Subtract 21/80 from 14/9

1st number: 1 5/9, 2nd number: 21/80

14/9 - 21/80 is 931/720.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 80 is 720
  2. For the 1st fraction, since 9 × 80 = 720,
    14/9 = 14 × 80/9 × 80 = 1120/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    21/80 = 21 × 9/80 × 9 = 189/720
  4. Subtract the two fractions:
    1120/720 - 189/720 = 1120 - 189/720 = 931/720
  5. In mixed form: 1211/720

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