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Subtract 16/72 from 7/20

7/20 - 16/72 is 23/180.

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,
    7/20 = 7 × 18/20 × 18 = 126/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    16/72 = 16 × 5/72 × 5 = 80/360
  4. Subtract the two like fractions:
    126/360 - 80/360 = 126 - 80/360 = 46/360
  5. After reducing the fraction, the answer is 23/180

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