Subtract 15/81 from 20/98
20/98 - 15/81 is 25/1323.
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,
20/98 = 20 × 81/98 × 81 = 1620/7938 - Likewise, for the 2nd fraction, since 81 × 98 = 7938,
15/81 = 15 × 98/81 × 98 = 1470/7938 - Subtract the two like fractions:
1620/7938 - 1470/7938 = 1620 - 1470/7938 = 150/7938 - After reducing the fraction, the answer is 25/1323
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