Subtract 21/8 from 35/10
1st number: 3 5/10, 2nd number: 2 5/8
35/10 - 21/8 is 7/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
35/10 = 35 × 4/10 × 4 = 140/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
21/8 = 21 × 5/8 × 5 = 105/40 - Subtract the two like fractions:
140/40 - 105/40 = 140 - 105/40 = 35/40 - After reducing the fraction, the answer is 7/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/10-21/8 35/10-42/8 35/20-21/8 35/10-21/16 35/10-63/8 35/30-21/8 35/10-21/24 35/50-21/8 35/10-21/40 35/70-21/8 35/10-21/56