Subtract 45/27 from 21/54
1st number: 21/54, 2nd number: 1 18/27
21/54 - 45/27 is -23/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 27 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 27 × 2 = 54,
45/27 = 45 × 2/27 × 2 = 90/54 - Subtract the two like fractions:
21/54 - 90/54 = 21 - 90/54 = -69/54 - After reducing the fraction, the answer is -23/18
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