Subtract 63/98 from 81/80
1st number: 1 1/80, 2nd number: 63/98
81/80 - 63/98 is 207/560.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 98 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 80 × 49 = 3920,
81/80 = 81 × 49/80 × 49 = 3969/3920 - Likewise, for the 2nd fraction, since 98 × 40 = 3920,
63/98 = 63 × 40/98 × 40 = 2520/3920 - Subtract the two like fractions:
3969/3920 - 2520/3920 = 3969 - 2520/3920 = 1449/3920 - After reducing the fraction, the answer is 207/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: