Subtract 63/98 from 9/40
9/40 - 63/98 is -117/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 98 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 40 × 49 = 1960,
9/40 = 9 × 49/40 × 49 = 441/1960 - Likewise, for the 2nd fraction, since 98 × 20 = 1960,
63/98 = 63 × 20/98 × 20 = 1260/1960 - Subtract the two like fractions:
441/1960 - 1260/1960 = 441 - 1260/1960 = -819/1960 - After reducing the fraction, the answer is -117/280
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