Subtract 81/35 from 2/20
1st number: 2/20, 2nd number: 2 11/35
2/20 - 81/35 is -31/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
2/20 = 2 × 7/20 × 7 = 14/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
81/35 = 81 × 4/35 × 4 = 324/140 - Subtract the two like fractions:
14/140 - 324/140 = 14 - 324/140 = -310/140 - After reducing the fraction, the answer is -31/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/20-81/35 2/40-81/35 2/20-81/70 6/20-81/35 2/60-81/35 10/20-81/35 14/20-81/35