Subtract 42/54 from 3/18
3/18 - 42/54 is -11/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
3/18 = 3 × 3/18 × 3 = 9/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
42/54 = 42 × 1/54 × 1 = 42/54 - Subtract the two like fractions:
9/54 - 42/54 = 9 - 42/54 = -33/54 - After reducing the fraction, the answer is -11/18
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