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Subtract 8/10 from 3/90

3/90 - 8/10 is -23/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 10 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 90 × 1 = 90,
    3/90 = 3 × 1/90 × 1 = 3/90
  3. Likewise, for the 2nd fraction, since 10 × 9 = 90,
    8/10 = 8 × 9/10 × 9 = 72/90
  4. Subtract the two like fractions:
    3/90 - 72/90 = 3 - 72/90 = -69/90
  5. After reducing the fraction, the answer is -23/30

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