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Subtract 35/9 from 28/80

1st number: 28/80, 2nd number: 3 8/9

28/80 - 35/9 is -637/180.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 9 is 720
  2. For the 1st fraction, since 80 × 9 = 720,
    28/80 = 28 × 9/80 × 9 = 252/720
  3. Likewise, for the 2nd fraction, since 9 × 80 = 720,
    35/9 = 35 × 80/9 × 80 = 2800/720
  4. Subtract the two fractions:
    252/720 - 2800/720 = 252 - 2800/720 = -2548/720
  5. After reducing the fraction, the answer is -637/180

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