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Subtract 8/5 from 5/42

1st number: 5/42, 2nd number: 1 3/5

5/42 - 8/5 is -311/210.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 5 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 42 × 5 = 210,
    5/42 = 5 × 5/42 × 5 = 25/210
  3. Likewise, for the 2nd fraction, since 5 × 42 = 210,
    8/5 = 8 × 42/5 × 42 = 336/210
  4. Subtract the two like fractions:
    25/210 - 336/210 = 25 - 336/210 = -311/210

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