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Subtract 9/8 from 10/72

1st number: 10/72, 2nd number: 1 1/8

10/72 - 9/8 is -71/72.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 8 is 72

    Next, find the equivalent fraction of both fractional numbers with denominator 72
  2. For the 1st fraction, since 72 × 1 = 72,
    10/72 = 10 × 1/72 × 1 = 10/72
  3. Likewise, for the 2nd fraction, since 8 × 9 = 72,
    9/8 = 9 × 9/8 × 9 = 81/72
  4. Subtract the two like fractions:
    10/72 - 81/72 = 10 - 81/72 = -71/72

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