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Subtract 7/20 from 1/4

1/4 - 7/20 is -1/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 20 is 20
  2. For the 1st fraction, since 4 × 5 = 20,
    1/4 = 1 × 5/4 × 5 = 5/20
  3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
    7/20 = 7 × 1/20 × 1 = 7/20
  4. Subtract the two fractions:
    5/20 - 7/20 = 5 - 7/20 = -2/20
  5. After reducing the fraction, the answer is -1/10

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