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Subtract 42/9 from 1/30

1st number: 1/30, 2nd number: 4 6/9

1/30 - 42/9 is -139/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 9 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 30 × 3 = 90,
    1/30 = 1 × 3/30 × 3 = 3/90
  3. Likewise, for the 2nd fraction, since 9 × 10 = 90,
    42/9 = 42 × 10/9 × 10 = 420/90
  4. Subtract the two like fractions:
    3/90 - 420/90 = 3 - 420/90 = -417/90
  5. After reducing the fraction, the answer is -139/30

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