Subtract 8/16 from 28/20
1st number: 1 8/20, 2nd number: 8/16
28/20 - 8/16 is 9/10.
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,
28/20 = 28 × 4/20 × 4 = 112/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
8/16 = 8 × 5/16 × 5 = 40/80 - Subtract the two like fractions:
112/80 - 40/80 = 112 - 40/80 = 72/80 - After reducing the fraction, the answer is 9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/20-8/16 28/40-8/16 28/20-8/32 84/20-8/16 28/20-24/16 28/60-8/16 28/20-8/48 28/20-40/16 28/20-8/80 28/20-56/16