Subtract 18/81 from 56/2
1st number: 28 0/2, 2nd number: 18/81
56/2 - 18/81 is 250/9.
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,
56/2 = 56 × 81/2 × 81 = 4536/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
18/81 = 18 × 2/81 × 2 = 36/162 - Subtract the two like fractions:
4536/162 - 36/162 = 4536 - 36/162 = 4500/162 - After reducing the fraction, the answer is 250/9
- In mixed form: 277/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/2-36/81 56/4-18/81 56/2-54/81 56/6-18/81 56/2-90/81 56/10-18/81 56/14-18/81