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Subtract 16/5 from 30/18

1st number: 1 12/18, 2nd number: 3 1/5

30/18 - 16/5 is -23/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 5 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 18 × 5 = 90,
    30/18 = 30 × 5/18 × 5 = 150/90
  3. Likewise, for the 2nd fraction, since 5 × 18 = 90,
    16/5 = 16 × 18/5 × 18 = 288/90
  4. Subtract the two like fractions:
    150/90 - 288/90 = 150 - 288/90 = -138/90
  5. After reducing the fraction, the answer is -23/15

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