Subtract 64/80 from 20/54
20/54 - 64/80 is -58/135.
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,
20/54 = 20 × 40/54 × 40 = 800/2160 - Likewise, for the 2nd fraction, since 80 × 27 = 2160,
64/80 = 64 × 27/80 × 27 = 1728/2160 - Subtract the two like fractions:
800/2160 - 1728/2160 = 800 - 1728/2160 = -928/2160 - After reducing the fraction, the answer is -58/135
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