Subtract 18/80 from 18/98
18/98 - 18/80 is -81/1960.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 98 × 40 = 3920,
18/98 = 18 × 40/98 × 40 = 720/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
18/80 = 18 × 49/80 × 49 = 882/3920 - Subtract the two like fractions:
720/3920 - 882/3920 = 720 - 882/3920 = -162/3920 - After reducing the fraction, the answer is -81/1960
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