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Subtract 12/20 from 75/70

1st number: 1 5/70, 2nd number: 12/20

75/70 - 12/20 is 33/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 20 is 140
  2. For the 1st fraction, since 70 × 2 = 140,
    75/70 = 75 × 2/70 × 2 = 150/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    12/20 = 12 × 7/20 × 7 = 84/140
  4. Subtract the two fractions:
    150/140 - 84/140 = 150 - 84/140 = 66/140
  5. After reducing the fraction, the answer is 33/70

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