Subtract 4/3 from 18/20
1st number: 18/20, 2nd number: 1 1/3
18/20 - 4/3 is -13/30.
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,
18/20 = 18 × 3/20 × 3 = 54/60 - Likewise, for the 2nd fraction, since 3 × 20 = 60,
4/3 = 4 × 20/3 × 20 = 80/60 - Subtract the two like fractions:
54/60 - 80/60 = 54 - 80/60 = -26/60 - After reducing the fraction, the answer is -13/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20-4/3 18/20-8/3 18/40-4/3 18/20-4/6 54/20-4/3 18/20-12/3 18/60-4/3 18/20-4/9 90/20-4/3 18/20-20/3 18/20-4/15 18/20-28/3 18/20-4/21