Subtract 9/40 from 18/6
1st number: 3 0/6, 2nd number: 9/40
18/6 - 9/40 is 111/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 6 × 20 = 120,
18/6 = 18 × 20/6 × 20 = 360/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
9/40 = 9 × 3/40 × 3 = 27/120 - Subtract the two like fractions:
360/120 - 27/120 = 360 - 27/120 = 333/120 - After reducing the fraction, the answer is 111/40
- In mixed form: 231/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/6-9/40 18/6-18/40 18/12-9/40 18/6-9/80 54/6-9/40 18/6-27/40 90/6-9/40 18/6-45/40 18/30-9/40 18/6-63/40 18/42-9/40