Subtract 40/20 from 16/10
1st number: 1 6/10, 2nd number: 2 0/20
16/10 - 40/20 is -2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
16/10 = 16 × 2/10 × 2 = 32/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
40/20 = 40 × 1/20 × 1 = 40/20 - Subtract the two like fractions:
32/20 - 40/20 = 32 - 40/20 = -8/20 - 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: 32/10-40/20 16/10-80/20 16/20-40/20 48/10-40/20 16/30-40/20 16/10-40/60 80/10-40/20 16/50-40/20 16/70-40/20