Subtract 80/54 from 21/28
1st number: 21/28, 2nd number: 1 26/54
21/28 - 80/54 is -79/108.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 54 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
21/28 = 21 × 27/28 × 27 = 567/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
80/54 = 80 × 14/54 × 14 = 1120/756 - Subtract the two like fractions:
567/756 - 1120/756 = 567 - 1120/756 = -553/756 - After reducing the fraction, the answer is -79/108
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