Subtract 27/40 from 18/3
1st number: 6 0/3, 2nd number: 27/40
18/3 - 27/40 is 213/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 3 × 40 = 120,
18/3 = 18 × 40/3 × 40 = 720/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
27/40 = 27 × 3/40 × 3 = 81/120 - Subtract the two like fractions:
720/120 - 81/120 = 720 - 81/120 = 639/120 - After reducing the fraction, the answer is 213/40
- In mixed form: 513/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/3-27/40 18/3-54/40 18/6-27/40 18/3-27/80 54/3-27/40 18/3-81/40 18/9-27/40 90/3-27/40 18/15-27/40 18/21-27/40