Subtract 15/81 from 49/30
1st number: 1 19/30, 2nd number: 15/81
49/30 - 15/81 is 391/270.
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,
49/30 = 49 × 27/30 × 27 = 1323/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
15/81 = 15 × 10/81 × 10 = 150/810 - Subtract the two like fractions:
1323/810 - 150/810 = 1323 - 150/810 = 1173/810 - After reducing the fraction, the answer is 391/270
- In mixed form: 1121/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/30-15/81 49/30-30/81 49/60-15/81 49/30-45/81 49/90-15/81 49/30-75/81