Subtract 81/98 from 6/20
6/20 - 81/98 is -129/245.
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,
6/20 = 6 × 49/20 × 49 = 294/980 - Likewise, for the 2nd fraction, since 98 × 10 = 980,
81/98 = 81 × 10/98 × 10 = 810/980 - Subtract the two like fractions:
294/980 - 810/980 = 294 - 810/980 = -516/980 - After reducing the fraction, the answer is -129/245
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