Subtract 10/8 from 16/20
1st number: 16/20, 2nd number: 1 2/8
16/20 - 10/8 is -9/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 8 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 8 × 5 = 40,
10/8 = 10 × 5/8 × 5 = 50/40 - Subtract the two like fractions:
32/40 - 50/40 = 32 - 50/40 = -18/40 - After reducing the fraction, the answer is -9/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/20-10/8 16/20-20/8 16/40-10/8 16/20-10/16 48/20-10/8 16/20-30/8 16/60-10/8 16/20-10/24 80/20-10/8 16/20-50/8 16/20-10/40 16/20-70/8 16/20-10/56