Subtract 21/35 from 7/2
1st number: 3 1/2, 2nd number: 21/35
7/2 - 21/35 is 29/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 35 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 2 × 35 = 70,
7/2 = 7 × 35/2 × 35 = 245/70 - Likewise, for the 2nd fraction, since 35 × 2 = 70,
21/35 = 21 × 2/35 × 2 = 42/70 - Subtract the two like fractions:
245/70 - 42/70 = 245 - 42/70 = 203/70 - After reducing the fraction, the answer is 29/10
- In mixed form: 29/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/2-21/35 7/2-42/35 7/4-21/35 7/2-21/70 21/2-21/35 7/2-63/35 7/6-21/35 35/2-21/35 7/10-21/35 49/2-21/35 7/14-21/35