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Subtract 80/7 from 30/84

1st number: 30/84, 2nd number: 11 3/7

30/84 - 80/7 is -155/14.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 7 is 84
  2. For the 1st fraction, since 84 × 1 = 84,
    30/84 = 30 × 1/84 × 1 = 30/84
  3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
    80/7 = 80 × 12/7 × 12 = 960/84
  4. Subtract the two fractions:
    30/84 - 960/84 = 30 - 960/84 = -930/84
  5. After reducing the fraction, the answer is -155/14

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