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Subtract 16/18 from 21/32

21/32 - 16/18 is -67/288.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 32 and 18 is 288

    Next, find the equivalent fraction of both fractional numbers with denominator 288
  2. For the 1st fraction, since 32 × 9 = 288,
    21/32 = 21 × 9/32 × 9 = 189/288
  3. Likewise, for the 2nd fraction, since 18 × 16 = 288,
    16/18 = 16 × 16/18 × 16 = 256/288
  4. Subtract the two like fractions:
    189/288 - 256/288 = 189 - 256/288 = -67/288

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