Subtract 40/14 from 21/3
1st number: 7 0/3, 2nd number: 2 12/14
21/3 - 40/14 is 29/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 3 × 14 = 42,
21/3 = 21 × 14/3 × 14 = 294/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
40/14 = 40 × 3/14 × 3 = 120/42 - Subtract the two like fractions:
294/42 - 120/42 = 294 - 120/42 = 174/42 - After reducing the fraction, the answer is 29/7
- In mixed form: 41/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3-40/14 21/3-80/14 21/6-40/14 21/3-40/28 63/3-40/14 21/9-40/14 21/3-40/42 21/15-40/14 21/3-40/70 21/3-40/98