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Subtract 18/64 from 10/20

10/20 - 18/64 is 7/32.

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,
    10/20 = 10 × 16/20 × 16 = 160/320
  3. Likewise, for the 2nd fraction, since 64 × 5 = 320,
    18/64 = 18 × 5/64 × 5 = 90/320
  4. Subtract the two like fractions:
    160/320 - 90/320 = 160 - 90/320 = 70/320
  5. After reducing the fraction, the answer is 7/32

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