Subtract 81/3 from 80/20
1st number: 4 0/20, 2nd number: 27 0/3
80/20 - 81/3 is -23/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 3 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
80/20 = 80 × 3/20 × 3 = 240/60 - Likewise, for the 2nd fraction, since 3 × 20 = 60,
81/3 = 81 × 20/3 × 20 = 1620/60 - Subtract the two like fractions:
240/60 - 1620/60 = 240 - 1620/60 = -1380/60 - After reducing the fraction, the answer is -23/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/40-81/3 80/20-81/6 80/60-81/3 80/20-81/9 80/20-81/15 80/20-81/21