Subtract 7/20 from 12/16
12/16 - 7/20 is 2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
12/16 = 12 × 5/16 × 5 = 60/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
7/20 = 7 × 4/20 × 4 = 28/80 - Subtract the two like fractions:
60/80 - 28/80 = 60 - 28/80 = 32/80 - After reducing the fraction, the answer is 2/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/16-7/20 12/16-14/20 12/32-7/20 12/16-7/40 36/16-7/20 12/16-21/20 12/48-7/20 12/16-7/60 60/16-7/20 12/16-35/20 12/80-7/20 84/16-7/20 12/16-49/20