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Subtract 7/9 from 45/63

45/63 - 7/9 is -4/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 9 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 63 × 1 = 63,
    45/63 = 45 × 1/63 × 1 = 45/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    7/9 = 7 × 7/9 × 7 = 49/63
  4. Subtract the two like fractions:
    45/63 - 49/63 = 45 - 49/63 = -4/63

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