Subtract 20/8 from 3/28
1st number: 3/28, 2nd number: 2 4/8
3/28 - 20/8 is -67/28.
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,
3/28 = 3 × 2/28 × 2 = 6/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
20/8 = 20 × 7/8 × 7 = 140/56 - Subtract the two like fractions:
6/56 - 140/56 = 6 - 140/56 = -134/56 - After reducing the fraction, the answer is -67/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/28-20/8 3/28-40/8 3/56-20/8 3/28-20/16 9/28-20/8 3/28-60/8 3/84-20/8 3/28-20/24 15/28-20/8 3/28-20/40 21/28-20/8 3/28-20/56