Subtract 7/10 from 40/28
1st number: 1 12/28, 2nd number: 7/10
40/28 - 7/10 is 51/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
40/28 = 40 × 5/28 × 5 = 200/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
7/10 = 7 × 14/10 × 14 = 98/140 - Subtract the two like fractions:
200/140 - 98/140 = 200 - 98/140 = 102/140 - After reducing the fraction, the answer is 51/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28-7/10 40/28-14/10 40/56-7/10 40/28-7/20 40/28-21/10 40/84-7/10 40/28-7/30 40/28-35/10 40/28-7/50 40/28-49/10 40/28-7/70