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Subtract 48/42 from 3/20

1st number: 3/20, 2nd number: 1 6/42

3/20 - 48/42 is -139/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 42 is 420
  2. For the 1st fraction, since 20 × 21 = 420,
    3/20 = 3 × 21/20 × 21 = 63/420
  3. Likewise, for the 2nd fraction, since 42 × 10 = 420,
    48/42 = 48 × 10/42 × 10 = 480/420
  4. Subtract the two fractions:
    63/420 - 480/420 = 63 - 480/420 = -417/420
  5. After reducing the fraction, the answer is -139/140

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