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Subtract 12/5 from 28/70

1st number: 28/70, 2nd number: 2 2/5

28/70 - 12/5 is -2/1.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 5 is 70

    Next, find the equivalent fraction of both fractional numbers with denominator 70
  2. For the 1st fraction, since 70 × 1 = 70,
    28/70 = 28 × 1/70 × 1 = 28/70
  3. Likewise, for the 2nd fraction, since 5 × 14 = 70,
    12/5 = 12 × 14/5 × 14 = 168/70
  4. Subtract the two like fractions:
    28/70 - 168/70 = 28 - 168/70 = -140/70
  5. After reducing the fraction, the answer is -2/1

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