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Subtract 18/16 from 18/30

1st number: 18/30, 2nd number: 1 2/16

18/30 - 18/16 is -21/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 16 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 30 × 8 = 240,
    18/30 = 18 × 8/30 × 8 = 144/240
  3. Likewise, for the 2nd fraction, since 16 × 15 = 240,
    18/16 = 18 × 15/16 × 15 = 270/240
  4. Subtract the two like fractions:
    144/240 - 270/240 = 144 - 270/240 = -126/240
  5. After reducing the fraction, the answer is -21/40

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