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Subtract 1/8 from 21/27

21/27 - 1/8 is 47/72.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 27 and 8 is 216

    Next, find the equivalent fraction of both fractional numbers with denominator 216
  2. For the 1st fraction, since 27 × 8 = 216,
    21/27 = 21 × 8/27 × 8 = 168/216
  3. Likewise, for the 2nd fraction, since 8 × 27 = 216,
    1/8 = 1 × 27/8 × 27 = 27/216
  4. Subtract the two like fractions:
    168/216 - 27/216 = 168 - 27/216 = 141/216
  5. After reducing the fraction, the answer is 47/72

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