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Subtract 21/80 from 84/12

1st number: 7 0/12, 2nd number: 21/80

84/12 - 21/80 is 539/80.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 80 is 240
  2. For the 1st fraction, since 12 × 20 = 240,
    84/12 = 84 × 20/12 × 20 = 1680/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    21/80 = 21 × 3/80 × 3 = 63/240
  4. Subtract the two fractions:
    1680/240 - 63/240 = 1680 - 63/240 = 1617/240
  5. After reducing the fraction, the answer is 539/80
  6. In mixed form: 659/80

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