Subtract 15/40 from 25/7
1st number: 3 4/7, 2nd number: 15/40
25/7 - 15/40 is 179/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
25/7 = 25 × 40/7 × 40 = 1000/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
15/40 = 15 × 7/40 × 7 = 105/280 - Subtract the two like fractions:
1000/280 - 105/280 = 1000 - 105/280 = 895/280 - After reducing the fraction, the answer is 179/56
- In mixed form: 311/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/7-15/40 25/7-30/40 25/14-15/40 25/7-15/80 75/7-15/40 25/7-45/40 25/21-15/40 25/7-75/40 25/35-15/40 25/49-15/40