Subtract 81/98 from 1/5
1/5 - 81/98 is -307/490.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 98 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 5 × 98 = 490,
1/5 = 1 × 98/5 × 98 = 98/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
81/98 = 81 × 5/98 × 5 = 405/490 - Subtract the two like fractions:
98/490 - 405/490 = 98 - 405/490 = -307/490
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