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Subtract 10/84 from 30/28

1st number: 1 2/28, 2nd number: 10/84

30/28 - 10/84 is 20/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 84 is 84
  2. For the 1st fraction, since 28 × 3 = 84,
    30/28 = 30 × 3/28 × 3 = 90/84
  3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
    10/84 = 10 × 1/84 × 1 = 10/84
  4. Subtract the two fractions:
    90/84 - 10/84 = 90 - 10/84 = 80/84
  5. After reducing the fraction, the answer is 20/21

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