Subtract 42/3 from 21/54
1st number: 21/54, 2nd number: 14 0/3
21/54 - 42/3 is -245/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 3 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 54 × 1 = 54,
21/54 = 21 × 1/54 × 1 = 21/54 - Likewise, for the 2nd fraction, since 3 × 18 = 54,
42/3 = 42 × 18/3 × 18 = 756/54 - Subtract the two like fractions:
21/54 - 756/54 = 21 - 756/54 = -735/54 - After reducing the fraction, the answer is -245/18
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