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Subtract 9/40 from 5/30

5/30 - 9/40 is -7/120.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 40 is 120
  2. For the 1st fraction, since 30 × 4 = 120,
    5/30 = 5 × 4/30 × 4 = 20/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    9/40 = 9 × 3/40 × 3 = 27/120
  4. Subtract the two fractions:
    20/120 - 27/120 = 20 - 27/120 = -7/120

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