Subtract 54/8 from 20/9
1st number: 2 2/9, 2nd number: 6 6/8
20/9 - 54/8 is -163/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
20/9 = 20 × 8/9 × 8 = 160/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
54/8 = 54 × 9/8 × 9 = 486/72 - Subtract the two like fractions:
160/72 - 486/72 = 160 - 486/72 = -326/72 - After reducing the fraction, the answer is -163/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/9-54/8 20/18-54/8 20/9-54/16 60/9-54/8 20/27-54/8 20/9-54/24 20/45-54/8 20/9-54/40 20/63-54/8 20/9-54/56