Subtract 8/81 from 60/30
1st number: 2 0/30, 2nd number: 8/81
60/30 - 8/81 is 154/81.
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,
60/30 = 60 × 27/30 × 27 = 1620/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
8/81 = 8 × 10/81 × 10 = 80/810 - Subtract the two like fractions:
1620/810 - 80/810 = 1620 - 80/810 = 1540/810 - After reducing the fraction, the answer is 154/81
- In mixed form: 173/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/30-16/81 60/30-24/81 60/90-8/81 60/30-40/81 60/30-56/81