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Subtract 25/18 from 20/50

1st number: 20/50, 2nd number: 1 7/18

20/50 - 25/18 is -89/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 50 and 18 is 450

    Next, find the equivalent fraction of both fractional numbers with denominator 450
  2. For the 1st fraction, since 50 × 9 = 450,
    20/50 = 20 × 9/50 × 9 = 180/450
  3. Likewise, for the 2nd fraction, since 18 × 25 = 450,
    25/18 = 25 × 25/18 × 25 = 625/450
  4. Subtract the two like fractions:
    180/450 - 625/450 = 180 - 625/450 = -445/450
  5. After reducing the fraction, the answer is -89/90

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