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Subtract 18/10 from 45/54

1st number: 45/54, 2nd number: 1 8/10

45/54 - 18/10 is -29/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 10 is 270

    Next, find the equivalent fraction of both fractional numbers with denominator 270
  2. For the 1st fraction, since 54 × 5 = 270,
    45/54 = 45 × 5/54 × 5 = 225/270
  3. Likewise, for the 2nd fraction, since 10 × 27 = 270,
    18/10 = 18 × 27/10 × 27 = 486/270
  4. Subtract the two like fractions:
    225/270 - 486/270 = 225 - 486/270 = -261/270
  5. After reducing the fraction, the answer is -29/30

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