Subtract 28/63 from 21/98
21/98 - 28/63 is -29/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 63 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 98 × 9 = 882,
21/98 = 21 × 9/98 × 9 = 189/882 - Likewise, for the 2nd fraction, since 63 × 14 = 882,
28/63 = 28 × 14/63 × 14 = 392/882 - Subtract the two like fractions:
189/882 - 392/882 = 189 - 392/882 = -203/882 - After reducing the fraction, the answer is -29/126
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