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Subtract 9/30 from 4/40

4/40 - 9/30 is -1/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 30 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 40 × 3 = 120,
    4/40 = 4 × 3/40 × 3 = 12/120
  3. Likewise, for the 2nd fraction, since 30 × 4 = 120,
    9/30 = 9 × 4/30 × 4 = 36/120
  4. Subtract the two like fractions:
    12/120 - 36/120 = 12 - 36/120 = -24/120
  5. After reducing the fraction, the answer is -1/5

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