Subtract 7/40 from 8/54
8/54 - 7/40 is -29/1080.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 54 × 20 = 1080,
8/54 = 8 × 20/54 × 20 = 160/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
7/40 = 7 × 27/40 × 27 = 189/1080 - Subtract the two like fractions:
160/1080 - 189/1080 = 160 - 189/1080 = -29/1080
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