Subtract 27/21 from 40/3
1st number: 13 1/3, 2nd number: 1 6/21
40/3 - 27/21 is 253/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
40/3 = 40 × 7/3 × 7 = 280/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
27/21 = 27 × 1/21 × 1 = 27/21 - Subtract the two like fractions:
280/21 - 27/21 = 280 - 27/21 = 253/21 - In mixed form: 121/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/3-27/21 40/3-54/21 40/6-27/21 40/3-27/42 40/3-81/21 40/9-27/21 40/3-27/63 40/15-27/21 40/21-27/21