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Subtract 12/72 from 3/30

3/30 - 12/72 is -1/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 30 × 12 = 360,
    3/30 = 3 × 12/30 × 12 = 36/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    12/72 = 12 × 5/72 × 5 = 60/360
  4. Subtract the two like fractions:
    36/360 - 60/360 = 36 - 60/360 = -24/360
  5. After reducing the fraction, the answer is -1/15

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