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Subtract 9/72 from 45/50

45/50 - 9/72 is 31/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 50 and 72 is 1800
  2. For the 1st fraction, since 50 × 36 = 1800,
    45/50 = 45 × 36/50 × 36 = 1620/1800
  3. Likewise, for the 2nd fraction, since 72 × 25 = 1800,
    9/72 = 9 × 25/72 × 25 = 225/1800
  4. Subtract the two fractions:
    1620/1800 - 225/1800 = 1620 - 225/1800 = 1395/1800
  5. After reducing the fraction, the answer is 31/40

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