Subtract 10/40 from 2/7
2/7 - 10/40 is 1/28.
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,
2/7 = 2 × 40/7 × 40 = 80/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
10/40 = 10 × 7/40 × 7 = 70/280 - Subtract the two like fractions:
80/280 - 70/280 = 80 - 70/280 = 10/280 - After reducing the fraction, the answer is 1/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/7-10/40 2/7-20/40 2/14-10/40 2/7-10/80 6/7-10/40 2/7-30/40 2/21-10/40 10/7-10/40 2/7-50/40 2/35-10/40 14/7-10/40 2/7-70/40 2/49-10/40