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Subtract 18/64 from 18/20

18/20 - 18/64 is 99/160.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 64 is 320

    Next, find the equivalent fraction of both fractional numbers with denominator 320
  2. For the 1st fraction, since 20 × 16 = 320,
    18/20 = 18 × 16/20 × 16 = 288/320
  3. Likewise, for the 2nd fraction, since 64 × 5 = 320,
    18/64 = 18 × 5/64 × 5 = 90/320
  4. Subtract the two like fractions:
    288/320 - 90/320 = 288 - 90/320 = 198/320
  5. After reducing the fraction, the answer is 99/160

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