Subtract 84/7 from 40/3
1st number: 13 1/3, 2nd number: 12 0/7
40/3 - 84/7 is 4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 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 7 × 3 = 21,
84/7 = 84 × 3/7 × 3 = 252/21 - Subtract the two like fractions:
280/21 - 252/21 = 280 - 252/21 = 28/21 - After reducing the fraction, the answer is 4/3
- In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/3-84/7 40/6-84/7 40/3-84/14 40/9-84/7 40/3-84/21 40/15-84/7 40/3-84/35 40/21-84/7 40/3-84/49