Subtract 8/40 from 49/28
1st number: 1 21/28, 2nd number: 8/40
49/28 - 8/40 is 31/20.
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,
49/28 = 49 × 10/28 × 10 = 490/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
8/40 = 8 × 7/40 × 7 = 56/280 - Subtract the two like fractions:
490/280 - 56/280 = 490 - 56/280 = 434/280 - After reducing the fraction, the answer is 31/20
- In mixed form: 111/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/28-8/40 49/28-16/40 49/56-8/40 49/28-8/80 49/28-24/40 49/84-8/40 49/28-56/40