Subtract 35/21 from 15/2
1st number: 7 1/2, 2nd number: 1 14/21
15/2 - 35/21 is 35/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
15/2 = 15 × 21/2 × 21 = 315/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
35/21 = 35 × 2/21 × 2 = 70/42 - Subtract the two like fractions:
315/42 - 70/42 = 315 - 70/42 = 245/42 - After reducing the fraction, the answer is 35/6
- In mixed form: 55/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2-35/21 15/2-70/21 15/4-35/21 15/2-35/42 45/2-35/21 15/6-35/21 15/2-35/63 75/2-35/21 15/10-35/21 15/14-35/21