Subtract 3/18 from 40/5
1st number: 8 0/5, 2nd number: 3/18
40/5 - 3/18 is 47/6.
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,
40/5 = 40 × 18/5 × 18 = 720/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
3/18 = 3 × 5/18 × 5 = 15/90 - Subtract the two like fractions:
720/90 - 15/90 = 720 - 15/90 = 705/90 - After reducing the fraction, the answer is 47/6
- In mixed form: 75/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/5-3/18 40/5-6/18 40/10-3/18 40/5-3/36 40/5-9/18 40/15-3/18 40/5-3/54 40/5-15/18 40/25-3/18 40/5-3/90 40/5-21/18 40/35-3/18