Subtract 21/54 from 20/98
20/98 - 21/54 is -163/882.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 54 is 2646
Next, find the equivalent fraction of both fractional numbers with denominator 2646 - For the 1st fraction, since 98 × 27 = 2646,
20/98 = 20 × 27/98 × 27 = 540/2646 - Likewise, for the 2nd fraction, since 54 × 49 = 2646,
21/54 = 21 × 49/54 × 49 = 1029/2646 - Subtract the two like fractions:
540/2646 - 1029/2646 = 540 - 1029/2646 = -489/2646 - After reducing the fraction, the answer is -163/882
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