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Subtract 35/9 from 30/42

1st number: 30/42, 2nd number: 3 8/9

30/42 - 35/9 is -200/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 9 is 126
  2. For the 1st fraction, since 42 × 3 = 126,
    30/42 = 30 × 3/42 × 3 = 90/126
  3. Likewise, for the 2nd fraction, since 9 × 14 = 126,
    35/9 = 35 × 14/9 × 14 = 490/126
  4. Subtract the two fractions:
    90/126 - 490/126 = 90 - 490/126 = -400/126
  5. After reducing the fraction, the answer is -200/63

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