Subtract 18/80 from 7/54
7/54 - 18/80 is -103/1080.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 80 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 54 × 40 = 2160,
7/54 = 7 × 40/54 × 40 = 280/2160 - Likewise, for the 2nd fraction, since 80 × 27 = 2160,
18/80 = 18 × 27/80 × 27 = 486/2160 - Subtract the two like fractions:
280/2160 - 486/2160 = 280 - 486/2160 = -206/2160 - After reducing the fraction, the answer is -103/1080
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