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Subtract 40/7 from 10/18

1st number: 10/18, 2nd number: 5 5/7

10/18 - 40/7 is -325/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 7 is 126
  2. For the 1st fraction, since 18 × 7 = 126,
    10/18 = 10 × 7/18 × 7 = 70/126
  3. Likewise, for the 2nd fraction, since 7 × 18 = 126,
    40/7 = 40 × 18/7 × 18 = 720/126
  4. Subtract the two fractions:
    70/126 - 720/126 = 70 - 720/126 = -650/126
  5. After reducing the fraction, the answer is -325/63

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