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Subtract 27/32 from 1/21

1/21 - 27/32 is -535/672.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 672
  2. For the 1st fraction, since 21 × 32 = 672,
    1/21 = 1 × 32/21 × 32 = 32/672
  3. Likewise, for the 2nd fraction, since 32 × 21 = 672,
    27/32 = 27 × 21/32 × 21 = 567/672
  4. Subtract the two like fractions:
    32/672 - 567/672 = 32 - 567/672 = -535/672

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