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Subtract 9/10 from 2/8

2/8 - 9/10 is -13/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 10 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 8 × 5 = 40,
    2/8 = 2 × 5/8 × 5 = 10/40
  3. Likewise, for the 2nd fraction, since 10 × 4 = 40,
    9/10 = 9 × 4/10 × 4 = 36/40
  4. Subtract the two like fractions:
    10/40 - 36/40 = 10 - 36/40 = -26/40
  5. After reducing the fraction, the answer is -13/20

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