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Subtract 7/72 from 5/4

1st number: 1 1/4, 2nd number: 7/72

5/4 - 7/72 is 83/72.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 72 is 72

    Next, find the equivalent fraction of both fractional numbers with denominator 72
  2. For the 1st fraction, since 4 × 18 = 72,
    5/4 = 5 × 18/4 × 18 = 90/72
  3. Likewise, for the 2nd fraction, since 72 × 1 = 72,
    7/72 = 7 × 1/72 × 1 = 7/72
  4. Subtract the two like fractions:
    90/72 - 7/72 = 90 - 7/72 = 83/72
  5. In mixed form: 111/72

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