Subtract 81/80 from 18/98
1st number: 18/98, 2nd number: 1 1/80
18/98 - 81/80 is -3249/3920.
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,
81/80 = 81 × 49/80 × 49 = 3969/3920 - Subtract the two like fractions:
720/3920 - 3969/3920 = 720 - 3969/3920 = -3249/3920
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