Subtract 1/20 from 80/30
1st number: 2 20/30, 2nd number: 1/20
80/30 - 1/20 is 157/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
80/30 = 80 × 2/30 × 2 = 160/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
1/20 = 1 × 3/20 × 3 = 3/60 - Subtract the two like fractions:
160/60 - 3/60 = 160 - 3/60 = 157/60 - In mixed form: 237/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30-2/20 80/60-1/20 80/30-1/40 80/30-3/20 80/90-1/20 80/30-1/60 80/30-5/20 80/30-7/20