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Subtract 25/9 from 21/56

1st number: 21/56, 2nd number: 2 7/9

21/56 - 25/9 is -173/72.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 9 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 56 × 9 = 504,
    21/56 = 21 × 9/56 × 9 = 189/504
  3. Likewise, for the 2nd fraction, since 9 × 56 = 504,
    25/9 = 25 × 56/9 × 56 = 1400/504
  4. Subtract the two like fractions:
    189/504 - 1400/504 = 189 - 1400/504 = -1211/504
  5. After reducing the fraction, the answer is -173/72

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