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Subtract 7/8 from 3/30

3/30 - 7/8 is -31/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 8 is 120
  2. For the 1st fraction, since 30 × 4 = 120,
    3/30 = 3 × 4/30 × 4 = 12/120
  3. Likewise, for the 2nd fraction, since 8 × 15 = 120,
    7/8 = 7 × 15/8 × 15 = 105/120
  4. Subtract the two fractions:
    12/120 - 105/120 = 12 - 105/120 = -93/120
  5. After reducing the fraction, the answer is -31/40

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