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Subtract 21/40 from 8/14

8/14 - 21/40 is 13/280.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 40 is 280
  2. For the 1st fraction, since 14 × 20 = 280,
    8/14 = 8 × 20/14 × 20 = 160/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    21/40 = 21 × 7/40 × 7 = 147/280
  4. Subtract the two fractions:
    160/280 - 147/280 = 160 - 147/280 = 13/280

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