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Subtract 25/18 from 4/5

1st number: 4/5, 2nd number: 1 7/18

4/5 - 25/18 is -53/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 5 × 18 = 90,
    4/5 = 4 × 18/5 × 18 = 72/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    25/18 = 25 × 5/18 × 5 = 125/90
  4. Subtract the two like fractions:
    72/90 - 125/90 = 72 - 125/90 = -53/90

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