Subtract 16/20 from 5/28
5/28 - 16/20 is -87/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
5/28 = 5 × 5/28 × 5 = 25/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
16/20 = 16 × 7/20 × 7 = 112/140 - Subtract the two like fractions:
25/140 - 112/140 = 25 - 112/140 = -87/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/28-16/20 5/28-32/20 5/56-16/20 5/28-16/40 15/28-16/20 5/28-48/20 5/84-16/20 5/28-16/60 25/28-16/20 5/28-80/20 35/28-16/20