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Subtract 42/5 from 8/4

1st number: 2 0/4, 2nd number: 8 2/5

8/4 - 42/5 is -32/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 5 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 4 × 5 = 20,
    8/4 = 8 × 5/4 × 5 = 40/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    42/5 = 42 × 4/5 × 4 = 168/20
  4. Subtract the two like fractions:
    40/20 - 168/20 = 40 - 168/20 = -128/20
  5. After reducing the fraction, the answer is -32/5

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