Subtract 80/98 from 15/20
15/20 - 80/98 is -13/196.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 98 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
15/20 = 15 × 49/20 × 49 = 735/980 - Likewise, for the 2nd fraction, since 98 × 10 = 980,
80/98 = 80 × 10/98 × 10 = 800/980 - Subtract the two like fractions:
735/980 - 800/980 = 735 - 800/980 = -65/980 - After reducing the fraction, the answer is -13/196
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