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Subtract 18/8 from 30/80

1st number: 30/80, 2nd number: 2 2/8

30/80 - 18/8 is -15/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 8 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 80 × 1 = 80,
    30/80 = 30 × 1/80 × 1 = 30/80
  3. Likewise, for the 2nd fraction, since 8 × 10 = 80,
    18/8 = 18 × 10/8 × 10 = 180/80
  4. Subtract the two like fractions:
    30/80 - 180/80 = 30 - 180/80 = -150/80
  5. After reducing the fraction, the answer is -15/8

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