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Subtract 30/90 from 28/14

1st number: 2 0/14, 2nd number: 30/90

28/14 - 30/90 is 5/3.

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,
    28/14 = 28 × 45/14 × 45 = 1260/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    30/90 = 30 × 7/90 × 7 = 210/630
  4. Subtract the two like fractions:
    1260/630 - 210/630 = 1260 - 210/630 = 1050/630
  5. After reducing the fraction, the answer is 5/3
  6. In mixed form: 12/3

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