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Subtract 90/50 from 8/20

1st number: 8/20, 2nd number: 1 40/50

8/20 - 90/50 is -7/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 50 is 100

    Next, find the equivalent fraction of both fractional numbers with denominator 100
  2. For the 1st fraction, since 20 × 5 = 100,
    8/20 = 8 × 5/20 × 5 = 40/100
  3. Likewise, for the 2nd fraction, since 50 × 2 = 100,
    90/50 = 90 × 2/50 × 2 = 180/100
  4. Subtract the two like fractions:
    40/100 - 180/100 = 40 - 180/100 = -140/100
  5. After reducing the fraction, the answer is -7/5

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