Subtract 7/21 from 7/98
7/98 - 7/21 is -11/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 21 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 98 × 3 = 294,
7/98 = 7 × 3/98 × 3 = 21/294 - Likewise, for the 2nd fraction, since 21 × 14 = 294,
7/21 = 7 × 14/21 × 14 = 98/294 - Subtract the two like fractions:
21/294 - 98/294 = 21 - 98/294 = -77/294 - After reducing the fraction, the answer is -11/42
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