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Subtract 4/20 from 15/30

15/30 - 4/20 is 3/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 20 is 60
  2. For the 1st fraction, since 30 × 2 = 60,
    15/30 = 15 × 2/30 × 2 = 30/60
  3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
    4/20 = 4 × 3/20 × 3 = 12/60
  4. Subtract the two fractions:
    30/60 - 12/60 = 30 - 12/60 = 18/60
  5. After reducing the fraction, the answer is 3/10

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