Subtract 16/9 from 20/24
1st number: 20/24, 2nd number: 1 7/9
20/24 - 16/9 is -17/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
20/24 = 20 × 3/24 × 3 = 60/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
16/9 = 16 × 8/9 × 8 = 128/72 - Subtract the two like fractions:
60/72 - 128/72 = 60 - 128/72 = -68/72 - After reducing the fraction, the answer is -17/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/24-16/9 20/24-32/9 20/48-16/9 20/24-16/18 60/24-16/9 20/24-48/9 20/72-16/9 20/24-16/27 20/24-80/9 20/24-16/45 20/24-16/63