Subtract 81/15 from 20/98
1st number: 20/98, 2nd number: 5 6/15
20/98 - 81/15 is -1273/245.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 15 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 98 × 15 = 1470,
20/98 = 20 × 15/98 × 15 = 300/1470 - Likewise, for the 2nd fraction, since 15 × 98 = 1470,
81/15 = 81 × 98/15 × 98 = 7938/1470 - Subtract the two like fractions:
300/1470 - 7938/1470 = 300 - 7938/1470 = -7638/1470 - After reducing the fraction, the answer is -1273/245
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