Subtract 25/7 from 81/3
1st number: 27 0/3, 2nd number: 3 4/7
81/3 - 25/7 is 164/7.
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,
81/3 = 81 × 7/3 × 7 = 567/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
25/7 = 25 × 3/7 × 3 = 75/21 - Subtract the two like fractions:
567/21 - 75/21 = 567 - 75/21 = 492/21 - After reducing the fraction, the answer is 164/7
- In mixed form: 233/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/3-50/7 81/6-25/7 81/3-25/14 81/3-75/7 81/9-25/7 81/3-25/21 81/15-25/7 81/3-25/35 81/21-25/7 81/3-25/49