Subtract 7/32 from 20/28
20/28 - 7/32 is 111/224.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 32 is 224
Next, find the equivalent fraction of both fractional numbers with denominator 224 - For the 1st fraction, since 28 × 8 = 224,
20/28 = 20 × 8/28 × 8 = 160/224 - Likewise, for the 2nd fraction, since 32 × 7 = 224,
7/32 = 7 × 7/32 × 7 = 49/224 - Subtract the two like fractions:
160/224 - 49/224 = 160 - 49/224 = 111/224
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28-7/32 20/28-14/32 20/56-7/32 20/28-7/64 60/28-7/32 20/28-21/32 20/84-7/32 20/28-7/96 20/28-35/32 20/28-49/32