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Subtract 21/45 from 7/32

7/32 - 21/45 is -119/480.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 32 and 45 is 1440

    Next, find the equivalent fraction of both fractional numbers with denominator 1440
  2. For the 1st fraction, since 32 × 45 = 1440,
    7/32 = 7 × 45/32 × 45 = 315/1440
  3. Likewise, for the 2nd fraction, since 45 × 32 = 1440,
    21/45 = 21 × 32/45 × 32 = 672/1440
  4. Subtract the two like fractions:
    315/1440 - 672/1440 = 315 - 672/1440 = -357/1440
  5. After reducing the fraction, the answer is -119/480

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