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Subtract 7/90 from 3/4

3/4 - 7/90 is 121/180.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 90 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 4 × 45 = 180,
    3/4 = 3 × 45/4 × 45 = 135/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    7/90 = 7 × 2/90 × 2 = 14/180
  4. Subtract the two like fractions:
    135/180 - 14/180 = 135 - 14/180 = 121/180

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