Subtract 8/10 from 7/28
7/28 - 8/10 is -11/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
7/28 = 7 × 5/28 × 5 = 35/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
8/10 = 8 × 14/10 × 14 = 112/140 - Subtract the two like fractions:
35/140 - 112/140 = 35 - 112/140 = -77/140 - After reducing the fraction, the answer is -11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28-8/10 7/28-16/10 7/56-8/10 7/28-8/20 21/28-8/10 7/28-24/10 7/84-8/10 7/28-8/30 35/28-8/10 7/28-40/10 7/28-8/50 49/28-8/10 7/28-56/10 7/28-8/70