Subtract 84/98 from 9/20
9/20 - 84/98 is -57/140.
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,
9/20 = 9 × 49/20 × 49 = 441/980 - Likewise, for the 2nd fraction, since 98 × 10 = 980,
84/98 = 84 × 10/98 × 10 = 840/980 - Subtract the two like fractions:
441/980 - 840/980 = 441 - 840/980 = -399/980 - After reducing the fraction, the answer is -57/140
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