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Subtract 9/8 from 40/7

1st number: 5 5/7, 2nd number: 1 1/8

40/7 - 9/8 is 257/56.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 8 is 56
  2. For the 1st fraction, since 7 × 8 = 56,
    40/7 = 40 × 8/7 × 8 = 320/56
  3. Likewise, for the 2nd fraction, since 8 × 7 = 56,
    9/8 = 9 × 7/8 × 7 = 63/56
  4. Subtract the two fractions:
    320/56 - 63/56 = 320 - 63/56 = 257/56
  5. In mixed form: 433/56

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