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Subtract 45/84 from 4/15

4/15 - 45/84 is -113/420.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 84 is 420
  2. For the 1st fraction, since 15 × 28 = 420,
    4/15 = 4 × 28/15 × 28 = 112/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    45/84 = 45 × 5/84 × 5 = 225/420
  4. Subtract the two fractions:
    112/420 - 225/420 = 112 - 225/420 = -113/420

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