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Subtract 50/8 from 40/42

1st number: 40/42, 2nd number: 6 2/8

40/42 - 50/8 is -445/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 8 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 42 × 4 = 168,
    40/42 = 40 × 4/42 × 4 = 160/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    50/8 = 50 × 21/8 × 21 = 1050/168
  4. Subtract the two like fractions:
    160/168 - 1050/168 = 160 - 1050/168 = -890/168
  5. After reducing the fraction, the answer is -445/84

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