Subtract 21/40 from 1/27
1/27 - 21/40 is -527/1080.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 27 × 40 = 1080,
1/27 = 1 × 40/27 × 40 = 40/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
21/40 = 21 × 27/40 × 27 = 567/1080 - Subtract the two like fractions:
40/1080 - 567/1080 = 40 - 567/1080 = -527/1080
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