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Subtract 10/40 from 9/7

1st number: 1 2/7, 2nd number: 10/40

9/7 - 10/40 is 29/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 40 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 7 × 40 = 280,
    9/7 = 9 × 40/7 × 40 = 360/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    10/40 = 10 × 7/40 × 7 = 70/280
  4. Subtract the two like fractions:
    360/280 - 70/280 = 360 - 70/280 = 290/280
  5. After reducing the fraction, the answer is 29/28
  6. In mixed form: 11/28

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