Subtract 48/54 from 21/80
21/80 - 48/54 is -451/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 54 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 80 × 27 = 2160,
21/80 = 21 × 27/80 × 27 = 567/2160 - Likewise, for the 2nd fraction, since 54 × 40 = 2160,
48/54 = 48 × 40/54 × 40 = 1920/2160 - Subtract the two like fractions:
567/2160 - 1920/2160 = 567 - 1920/2160 = -1353/2160 - After reducing the fraction, the answer is -451/720
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