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Subtract 1/81 from 7/5

1st number: 1 2/5, 2nd number: 1/81

7/5 - 1/81 is 562/405.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 81 is 405

    Next, find the equivalent fraction of both fractional numbers with denominator 405
  2. For the 1st fraction, since 5 × 81 = 405,
    7/5 = 7 × 81/5 × 81 = 567/405
  3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
    1/81 = 1 × 5/81 × 5 = 5/405
  4. Subtract the two like fractions:
    567/405 - 5/405 = 567 - 5/405 = 562/405
  5. In mixed form: 1157/405

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