Subtract 49/40 from 8/28
1st number: 8/28, 2nd number: 1 9/40
8/28 - 49/40 is -263/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
8/28 = 8 × 10/28 × 10 = 80/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
49/40 = 49 × 7/40 × 7 = 343/280 - Subtract the two like fractions:
80/280 - 343/280 = 80 - 343/280 = -263/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/28-49/40 8/28-98/40 8/56-49/40 8/28-49/80 24/28-49/40 8/84-49/40 40/28-49/40 56/28-49/40