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Subtract 20/72 from 84/56

1st number: 1 28/56, 2nd number: 20/72

84/56 - 20/72 is 11/9.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 72 is 504
  2. For the 1st fraction, since 56 × 9 = 504,
    84/56 = 84 × 9/56 × 9 = 756/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    20/72 = 20 × 7/72 × 7 = 140/504
  4. Subtract the two fractions:
    756/504 - 140/504 = 756 - 140/504 = 616/504
  5. After reducing the fraction, the answer is 11/9
  6. In mixed form: 12/9

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