Subtract 81/35 from 20/9
1st number: 2 2/9, 2nd number: 2 11/35
20/9 - 81/35 is -29/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 35 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 9 × 35 = 315,
20/9 = 20 × 35/9 × 35 = 700/315 - Likewise, for the 2nd fraction, since 35 × 9 = 315,
81/35 = 81 × 9/35 × 9 = 729/315 - Subtract the two like fractions:
700/315 - 729/315 = 700 - 729/315 = -29/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/9-81/35 20/18-81/35 20/9-81/70 60/9-81/35 20/27-81/35 20/45-81/35 20/63-81/35