Subtract 20/8 from 2/28
1st number: 2/28, 2nd number: 2 4/8
2/28 - 20/8 is -17/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
2/28 = 2 × 2/28 × 2 = 4/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
20/8 = 20 × 7/8 × 7 = 140/56 - Subtract the two like fractions:
4/56 - 140/56 = 4 - 140/56 = -136/56 - After reducing the fraction, the answer is -17/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/28-20/8 2/28-40/8 2/56-20/8 2/28-20/16 6/28-20/8 2/28-60/8 2/84-20/8 2/28-20/24 10/28-20/8 2/28-20/40 14/28-20/8 2/28-20/56