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Subtract 18/72 from 15/50

15/50 - 18/72 is 1/20.

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,
    15/50 = 15 × 36/50 × 36 = 540/1800
  3. Likewise, for the 2nd fraction, since 72 × 25 = 1800,
    18/72 = 18 × 25/72 × 25 = 450/1800
  4. Subtract the two fractions:
    540/1800 - 450/1800 = 540 - 450/1800 = 90/1800
  5. After reducing the fraction, the answer is 1/20

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