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Subtract 7/63 from 15/20

15/20 - 7/63 is 23/36.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 63 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 20 × 63 = 1260,
    15/20 = 15 × 63/20 × 63 = 945/1260
  3. Likewise, for the 2nd fraction, since 63 × 20 = 1260,
    7/63 = 7 × 20/63 × 20 = 140/1260
  4. Subtract the two like fractions:
    945/1260 - 140/1260 = 945 - 140/1260 = 805/1260
  5. After reducing the fraction, the answer is 23/36

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