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Subtract 7/10 from 1/7

1/7 - 7/10 is -39/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 10 is 70
  2. For the 1st fraction, since 7 × 10 = 70,
    1/7 = 1 × 10/7 × 10 = 10/70
  3. Likewise, for the 2nd fraction, since 10 × 7 = 70,
    7/10 = 7 × 7/10 × 7 = 49/70
  4. Subtract the two fractions:
    10/70 - 49/70 = 10 - 49/70 = -39/70

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