Subtract 18/81 from 8/98
8/98 - 18/81 is -62/441.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 81 is 7938
Next, find the equivalent fraction of both fractional numbers with denominator 7938 - For the 1st fraction, since 98 × 81 = 7938,
8/98 = 8 × 81/98 × 81 = 648/7938 - Likewise, for the 2nd fraction, since 81 × 98 = 7938,
18/81 = 18 × 98/81 × 98 = 1764/7938 - Subtract the two like fractions:
648/7938 - 1764/7938 = 648 - 1764/7938 = -1116/7938 - After reducing the fraction, the answer is -62/441
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