Subtract 10/81 from 80/30
1st number: 2 20/30, 2nd number: 10/81
80/30 - 10/81 is 206/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 30 × 27 = 810,
80/30 = 80 × 27/30 × 27 = 2160/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
10/81 = 10 × 10/81 × 10 = 100/810 - Subtract the two like fractions:
2160/810 - 100/810 = 2160 - 100/810 = 2060/810 - After reducing the fraction, the answer is 206/81
- In mixed form: 244/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30-20/81 80/60-10/81 80/30-30/81 80/90-10/81 80/30-50/81 80/30-70/81