Subtract 28/81 from 35/2
1st number: 17 1/2, 2nd number: 28/81
35/2 - 28/81 is 2779/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 2 × 81 = 162,
35/2 = 35 × 81/2 × 81 = 2835/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
28/81 = 28 × 2/81 × 2 = 56/162 - Subtract the two like fractions:
2835/162 - 56/162 = 2835 - 56/162 = 2779/162 - In mixed form: 1725/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/2-28/81 35/2-56/81 35/4-28/81 35/2-84/81 35/6-28/81 35/10-28/81 35/14-28/81