Subtract 20/8 from 16/5
1st number: 3 1/5, 2nd number: 2 4/8
16/5 - 20/8 is 7/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
16/5 = 16 × 8/5 × 8 = 128/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
20/8 = 20 × 5/8 × 5 = 100/40 - Subtract the two like fractions:
128/40 - 100/40 = 128 - 100/40 = 28/40 - After reducing the fraction, the answer is 7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/5-20/8 16/5-40/8 16/10-20/8 16/5-20/16 48/5-20/8 16/5-60/8 16/15-20/8 16/5-20/24 80/5-20/8 16/25-20/8 16/5-20/40 16/35-20/8 16/5-20/56