Subtract 90/9 from 20/24
1st number: 20/24, 2nd number: 10 0/9
20/24 - 90/9 is -55/6.
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,
90/9 = 90 × 8/9 × 8 = 720/72 - Subtract the two like fractions:
60/72 - 720/72 = 60 - 720/72 = -660/72 - After reducing the fraction, the answer is -55/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/24-90/9 20/48-90/9 20/24-90/18 60/24-90/9 20/72-90/9 20/24-90/27 20/24-90/45 20/24-90/63