Subtract 12/28 from 5/20
5/20 - 12/28 is -5/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
5/20 = 5 × 7/20 × 7 = 35/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
12/28 = 12 × 5/28 × 5 = 60/140 - Subtract the two like fractions:
35/140 - 60/140 = 35 - 60/140 = -25/140 - After reducing the fraction, the answer is -5/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20-12/28 5/20-24/28 5/40-12/28 5/20-12/56 15/20-12/28 5/20-36/28 5/60-12/28 5/20-12/84 25/20-12/28 5/20-60/28 35/20-12/28 5/20-84/28