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Subtract 42/18 from 8/30

1st number: 8/30, 2nd number: 2 6/18

8/30 - 42/18 is -31/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 30 × 3 = 90,
    8/30 = 8 × 3/30 × 3 = 24/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    42/18 = 42 × 5/18 × 5 = 210/90
  4. Subtract the two like fractions:
    24/90 - 210/90 = 24 - 210/90 = -186/90
  5. After reducing the fraction, the answer is -31/15

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