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Subtract 9/21 from 3/32

3/32 - 9/21 is -75/224.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 32 and 21 is 672

    Next, find the equivalent fraction of both fractional numbers with denominator 672
  2. For the 1st fraction, since 32 × 21 = 672,
    3/32 = 3 × 21/32 × 21 = 63/672
  3. Likewise, for the 2nd fraction, since 21 × 32 = 672,
    9/21 = 9 × 32/21 × 32 = 288/672
  4. Subtract the two like fractions:
    63/672 - 288/672 = 63 - 288/672 = -225/672
  5. After reducing the fraction, the answer is -75/224

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