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Subtract 40/7 from 30/42

1st number: 30/42, 2nd number: 5 5/7

30/42 - 40/7 is -5/1.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 7 is 42
  2. For the 1st fraction, since 42 × 1 = 42,
    30/42 = 30 × 1/42 × 1 = 30/42
  3. Likewise, for the 2nd fraction, since 7 × 6 = 42,
    40/7 = 40 × 6/7 × 6 = 240/42
  4. Subtract the two fractions:
    30/42 - 240/42 = 30 - 240/42 = -210/42
  5. After reducing the fraction, the answer is -5/1

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