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Subtract 3/45 from 1/63

1/63 - 3/45 is -16/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 45 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 63 × 5 = 315,
    1/63 = 1 × 5/63 × 5 = 5/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    3/45 = 3 × 7/45 × 7 = 21/315
  4. Subtract the two like fractions:
    5/315 - 21/315 = 5 - 21/315 = -16/315

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