Subtract 25/27 from 18/40
18/40 - 25/27 is -257/540.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 27 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
18/40 = 18 × 27/40 × 27 = 486/1080 - Likewise, for the 2nd fraction, since 27 × 40 = 1080,
25/27 = 25 × 40/27 × 40 = 1000/1080 - Subtract the two like fractions:
486/1080 - 1000/1080 = 486 - 1000/1080 = -514/1080 - After reducing the fraction, the answer is -257/540
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