Subtract 4/16 from 3/20
3/20 - 4/16 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
3/20 = 3 × 4/20 × 4 = 12/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
4/16 = 4 × 5/16 × 5 = 20/80 - Subtract the two like fractions:
12/80 - 20/80 = 12 - 20/80 = -8/80 - After reducing the fraction, the answer is -1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20-4/16 3/20-8/16 3/40-4/16 3/20-4/32 9/20-4/16 3/20-12/16 3/60-4/16 3/20-4/48 15/20-4/16 3/20-20/16 3/20-4/80 21/20-4/16 3/20-28/16