Subtract 40/18 from 80/5
1st number: 16 0/5, 2nd number: 2 4/18
80/5 - 40/18 is 124/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
80/5 = 80 × 18/5 × 18 = 1440/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
40/18 = 40 × 5/18 × 5 = 200/90 - Subtract the two like fractions:
1440/90 - 200/90 = 1440 - 200/90 = 1240/90 - After reducing the fraction, the answer is 124/9
- In mixed form: 137/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/5-80/18 80/10-40/18 80/5-40/36 80/15-40/18 80/5-40/54 80/25-40/18 80/5-40/90 80/35-40/18