Subtract 10/20 from 28/32
28/32 - 10/20 is 3/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 20 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 32 × 5 = 160,
28/32 = 28 × 5/32 × 5 = 140/160 - Likewise, for the 2nd fraction, since 20 × 8 = 160,
10/20 = 10 × 8/20 × 8 = 80/160 - Subtract the two like fractions:
140/160 - 80/160 = 140 - 80/160 = 60/160 - After reducing the fraction, the answer is 3/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/32-10/20 28/64-10/20 28/32-10/40 84/32-10/20 28/32-30/20 28/96-10/20 28/32-10/60 28/32-50/20 28/32-70/20