Subtract 27/30 from 18/54
18/54 - 27/30 is -17/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 30 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
18/54 = 18 × 5/54 × 5 = 90/270 - Likewise, for the 2nd fraction, since 30 × 9 = 270,
27/30 = 27 × 9/30 × 9 = 243/270 - Subtract the two like fractions:
90/270 - 243/270 = 90 - 243/270 = -153/270 - After reducing the fraction, the answer is -17/30
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