Subtract 8/81 from 35/2
1st number: 17 1/2, 2nd number: 8/81
35/2 - 8/81 is 2819/162.
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,
8/81 = 8 × 2/81 × 2 = 16/162 - Subtract the two like fractions:
2835/162 - 16/162 = 2835 - 16/162 = 2819/162 - In mixed form: 1765/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/2-8/81 35/2-16/81 35/4-8/81 35/2-24/81 35/6-8/81 35/2-40/81 35/10-8/81 35/2-56/81 35/14-8/81