Subtract 7/40 from 16/20
16/20 - 7/40 is 5/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
16/20 = 16 × 2/20 × 2 = 32/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
7/40 = 7 × 1/40 × 1 = 7/40 - Subtract the two like fractions:
32/40 - 7/40 = 32 - 7/40 = 25/40 - After reducing the fraction, the answer is 5/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/20-7/40 16/20-14/40 16/40-7/40 16/20-7/80 48/20-7/40 16/20-21/40 16/60-7/40 80/20-7/40 16/20-35/40 16/20-49/40