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Subtract 40/7 from 10/15

1st number: 10/15, 2nd number: 5 5/7

10/15 - 40/7 is -106/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 7 is 105
  2. For the 1st fraction, since 15 × 7 = 105,
    10/15 = 10 × 7/15 × 7 = 70/105
  3. Likewise, for the 2nd fraction, since 7 × 15 = 105,
    40/7 = 40 × 15/7 × 15 = 600/105
  4. Subtract the two fractions:
    70/105 - 600/105 = 70 - 600/105 = -530/105
  5. After reducing the fraction, the answer is -106/21

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