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Subtract 21/56 from 5/9

5/9 - 21/56 is 13/72.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 56 is 504
  2. For the 1st fraction, since 9 × 56 = 504,
    5/9 = 5 × 56/9 × 56 = 280/504
  3. Likewise, for the 2nd fraction, since 56 × 9 = 504,
    21/56 = 21 × 9/56 × 9 = 189/504
  4. Subtract the two fractions:
    280/504 - 189/504 = 280 - 189/504 = 91/504
  5. After reducing the fraction, the answer is 13/72

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