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Subtract 10/72 from 12/20

12/20 - 10/72 is 83/180.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 20 × 18 = 360,
    12/20 = 12 × 18/20 × 18 = 216/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    10/72 = 10 × 5/72 × 5 = 50/360
  4. Subtract the two like fractions:
    216/360 - 50/360 = 216 - 50/360 = 166/360
  5. After reducing the fraction, the answer is 83/180

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