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Subtract 30/90 from 81/14

1st number: 5 11/14, 2nd number: 30/90

81/14 - 30/90 is 229/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 14 × 45 = 630,
    81/14 = 81 × 45/14 × 45 = 3645/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    30/90 = 30 × 7/90 × 7 = 210/630
  4. Subtract the two like fractions:
    3645/630 - 210/630 = 3645 - 210/630 = 3435/630
  5. After reducing the fraction, the answer is 229/42
  6. In mixed form: 519/42

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