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Subtract 7/90 from 1/25

1/25 - 7/90 is -17/450.

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,
    1/25 = 1 × 18/25 × 18 = 18/450
  3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
    7/90 = 7 × 5/90 × 5 = 35/450
  4. Subtract the two like fractions:
    18/450 - 35/450 = 18 - 35/450 = -17/450

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