Subtract 81/80 from 56/49
1st number: 1 7/49, 2nd number: 1 1/80
56/49 - 81/80 is 73/560.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 49 × 80 = 3920,
56/49 = 56 × 80/49 × 80 = 4480/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
81/80 = 81 × 49/80 × 49 = 3969/3920 - Subtract the two like fractions:
4480/3920 - 3969/3920 = 4480 - 3969/3920 = 511/3920 - After reducing the fraction, the answer is 73/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/98-81/80