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Subtract 42/60 from 15/84

15/84 - 42/60 is -73/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 60 is 420
  2. For the 1st fraction, since 84 × 5 = 420,
    15/84 = 15 × 5/84 × 5 = 75/420
  3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
    42/60 = 42 × 7/60 × 7 = 294/420
  4. Subtract the two fractions:
    75/420 - 294/420 = 75 - 294/420 = -219/420
  5. After reducing the fraction, the answer is -73/140

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