Subtract 14/30 from 81/20
1st number: 4 1/20, 2nd number: 14/30
81/20 - 14/30 is 43/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
81/20 = 81 × 3/20 × 3 = 243/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
14/30 = 14 × 2/30 × 2 = 28/60 - Subtract the two like fractions:
243/60 - 28/60 = 243 - 28/60 = 215/60 - After reducing the fraction, the answer is 43/12
- In mixed form: 37/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/20-28/30 81/40-14/30 81/20-14/60 81/20-42/30 81/60-14/30 81/20-14/90 81/20-70/30 81/20-98/30