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Subtract 3/30 from 7/72

7/72 - 3/30 is -1/360.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 72 × 5 = 360,
    7/72 = 7 × 5/72 × 5 = 35/360
  3. Likewise, for the 2nd fraction, since 30 × 12 = 360,
    3/30 = 3 × 12/30 × 12 = 36/360
  4. Subtract the two like fractions:
    35/360 - 36/360 = 35 - 36/360 = -1/360

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