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Subtract 70/12 from 30/84

1st number: 30/84, 2nd number: 5 10/12

30/84 - 70/12 is -115/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 12 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 12 × 7 = 84,
    70/12 = 70 × 7/12 × 7 = 490/84
  4. Subtract the two fractions:
    30/84 - 490/84 = 30 - 490/84 = -460/84
  5. After reducing the fraction, the answer is -115/21

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