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Subtract 42/45 from 10/63

10/63 - 42/45 is -244/315.

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,
    10/63 = 10 × 5/63 × 5 = 50/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    42/45 = 42 × 7/45 × 7 = 294/315
  4. Subtract the two like fractions:
    50/315 - 294/315 = 50 - 294/315 = -244/315

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