Subtract 20/80 from 40/9
1st number: 4 4/9, 2nd number: 20/80
40/9 - 20/80 is 151/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 9 × 80 = 720,
40/9 = 40 × 80/9 × 80 = 3200/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
20/80 = 20 × 9/80 × 9 = 180/720 - Subtract the two like fractions:
3200/720 - 180/720 = 3200 - 180/720 = 3020/720 - After reducing the fraction, the answer is 151/36
- In mixed form: 47/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/9-20/80 40/9-40/80 40/18-20/80 40/9-60/80 40/27-20/80 40/45-20/80 40/63-20/80