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Subtract 21/18 from 3/25

1st number: 3/25, 2nd number: 1 3/18

3/25 - 21/18 is -157/150.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 18 is 450
  2. For the 1st fraction, since 25 × 18 = 450,
    3/25 = 3 × 18/25 × 18 = 54/450
  3. Likewise, for the 2nd fraction, since 18 × 25 = 450,
    21/18 = 21 × 25/18 × 25 = 525/450
  4. Subtract the two fractions:
    54/450 - 525/450 = 54 - 525/450 = -471/450
  5. After reducing the fraction, the answer is -157/150

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