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Subtract 7/10 from 1/20

1/20 - 7/10 is -13/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 10 is 20
  2. For the 1st fraction, since 20 × 1 = 20,
    1/20 = 1 × 1/20 × 1 = 1/20
  3. Likewise, for the 2nd fraction, since 10 × 2 = 20,
    7/10 = 7 × 2/10 × 2 = 14/20
  4. Subtract the two fractions:
    1/20 - 14/20 = 1 - 14/20 = -13/20

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