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Subtract 21/80 from 84/9

1st number: 9 3/9, 2nd number: 21/80

84/9 - 21/80 is 2177/240.

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,
    84/9 = 84 × 80/9 × 80 = 6720/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    21/80 = 21 × 9/80 × 9 = 189/720
  4. Subtract the two fractions:
    6720/720 - 189/720 = 6720 - 189/720 = 6531/720
  5. After reducing the fraction, the answer is 2177/240
  6. In mixed form: 917/240

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