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Subtract 1/21 from 15/32

15/32 - 1/21 is 283/672.

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,
    15/32 = 15 × 21/32 × 21 = 315/672
  3. Likewise, for the 2nd fraction, since 21 × 32 = 672,
    1/21 = 1 × 32/21 × 32 = 32/672
  4. Subtract the two like fractions:
    315/672 - 32/672 = 315 - 32/672 = 283/672

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