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Subtract 3/8 from 7/30

7/30 - 3/8 is -17/120.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 8 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 30 × 4 = 120,
    7/30 = 7 × 4/30 × 4 = 28/120
  3. Likewise, for the 2nd fraction, since 8 × 15 = 120,
    3/8 = 3 × 15/8 × 15 = 45/120
  4. Subtract the two like fractions:
    28/120 - 45/120 = 28 - 45/120 = -17/120

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