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Subtract 15/90 from 7/56

7/56 - 15/90 is -1/24.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 90 is 2520

    Next, find the equivalent fraction of both fractional numbers with denominator 2520
  2. For the 1st fraction, since 56 × 45 = 2520,
    7/56 = 7 × 45/56 × 45 = 315/2520
  3. Likewise, for the 2nd fraction, since 90 × 28 = 2520,
    15/90 = 15 × 28/90 × 28 = 420/2520
  4. Subtract the two like fractions:
    315/2520 - 420/2520 = 315 - 420/2520 = -105/2520
  5. After reducing the fraction, the answer is -1/24

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