Subtract 45/98 from 21/54
21/54 - 45/98 is -31/441.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 98 is 2646
Next, find the equivalent fraction of both fractional numbers with denominator 2646 - For the 1st fraction, since 54 × 49 = 2646,
21/54 = 21 × 49/54 × 49 = 1029/2646 - Likewise, for the 2nd fraction, since 98 × 27 = 2646,
45/98 = 45 × 27/98 × 27 = 1215/2646 - Subtract the two like fractions:
1029/2646 - 1215/2646 = 1029 - 1215/2646 = -186/2646 - After reducing the fraction, the answer is -31/441
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