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Subtract 10/90 from 81/4

1st number: 20 1/4, 2nd number: 10/90

81/4 - 10/90 is 725/36.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 90 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 4 × 45 = 180,
    81/4 = 81 × 45/4 × 45 = 3645/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    10/90 = 10 × 2/90 × 2 = 20/180
  4. Subtract the two like fractions:
    3645/180 - 20/180 = 3645 - 20/180 = 3625/180
  5. After reducing the fraction, the answer is 725/36
  6. In mixed form: 205/36

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