Subtract 35/81 from 8/30
8/30 - 35/81 is -67/405.
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,
8/30 = 8 × 27/30 × 27 = 216/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
35/81 = 35 × 10/81 × 10 = 350/810 - Subtract the two like fractions:
216/810 - 350/810 = 216 - 350/810 = -134/810 - After reducing the fraction, the answer is -67/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/30-35/81 8/30-70/81 8/60-35/81 24/30-35/81 8/90-35/81 40/30-35/81 56/30-35/81