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Subtract 30/45 from 15/84

15/84 - 30/45 is -41/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 45 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 84 × 15 = 1260,
    15/84 = 15 × 15/84 × 15 = 225/1260
  3. Likewise, for the 2nd fraction, since 45 × 28 = 1260,
    30/45 = 30 × 28/45 × 28 = 840/1260
  4. Subtract the two like fractions:
    225/1260 - 840/1260 = 225 - 840/1260 = -615/1260
  5. After reducing the fraction, the answer is -41/84

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