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Subtract 20/90 from 12/25

12/25 - 20/90 is 58/225.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 90 is 450

    Next, find the equivalent fraction of both fractional numbers with denominator 450
  2. For the 1st fraction, since 25 × 18 = 450,
    12/25 = 12 × 18/25 × 18 = 216/450
  3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
    20/90 = 20 × 5/90 × 5 = 100/450
  4. Subtract the two like fractions:
    216/450 - 100/450 = 216 - 100/450 = 116/450
  5. After reducing the fraction, the answer is 58/225

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