Subtract 8/30 from 81/27
1st number: 3 0/27, 2nd number: 8/30
81/27 - 8/30 is 41/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 30 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
81/27 = 81 × 10/27 × 10 = 810/270 - Likewise, for the 2nd fraction, since 30 × 9 = 270,
8/30 = 8 × 9/30 × 9 = 72/270 - Subtract the two like fractions:
810/270 - 72/270 = 810 - 72/270 = 738/270 - After reducing the fraction, the answer is 41/15
- In mixed form: 211/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/27-16/30 81/54-8/30 81/27-8/60 81/27-24/30 81/27-8/90 81/27-40/30 81/27-56/30