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Subtract 50/63 from 54/90

54/90 - 50/63 is -61/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 63 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 90 × 7 = 630,
    54/90 = 54 × 7/90 × 7 = 378/630
  3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
    50/63 = 50 × 10/63 × 10 = 500/630
  4. Subtract the two like fractions:
    378/630 - 500/630 = 378 - 500/630 = -122/630
  5. After reducing the fraction, the answer is -61/315

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