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Subtract 18/9 from 45/64

1st number: 45/64, 2nd number: 2 0/9

45/64 - 18/9 is -83/64.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 64 and 9 is 576

    Next, find the equivalent fraction of both fractional numbers with denominator 576
  2. For the 1st fraction, since 64 × 9 = 576,
    45/64 = 45 × 9/64 × 9 = 405/576
  3. Likewise, for the 2nd fraction, since 9 × 64 = 576,
    18/9 = 18 × 64/9 × 64 = 1152/576
  4. Subtract the two like fractions:
    405/576 - 1152/576 = 405 - 1152/576 = -747/576
  5. After reducing the fraction, the answer is -83/64

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