Subtract 2/81 from 9/2
1st number: 4 1/2, 2nd number: 2/81
9/2 - 2/81 is 725/162.
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,
9/2 = 9 × 81/2 × 81 = 729/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
2/81 = 2 × 2/81 × 2 = 4/162 - Subtract the two like fractions:
729/162 - 4/162 = 729 - 4/162 = 725/162 - In mixed form: 477/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/2-2/81 9/2-4/81 9/4-2/81 27/2-2/81 9/2-6/81 9/6-2/81 45/2-2/81 9/2-10/81 9/10-2/81 63/2-2/81 9/2-14/81 9/14-2/81