Subtract 9/10 from 28/7
1st number: 4 0/7, 2nd number: 9/10
28/7 - 9/10 is 31/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
28/7 = 28 × 10/7 × 10 = 280/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
9/10 = 9 × 7/10 × 7 = 63/70 - Subtract the two like fractions:
280/70 - 63/70 = 280 - 63/70 = 217/70 - After reducing the fraction, the answer is 31/10
- In mixed form: 31/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7-9/10 28/7-18/10 28/14-9/10 28/7-9/20 84/7-9/10 28/7-27/10 28/21-9/10 28/7-9/30 28/7-45/10 28/35-9/10 28/7-9/50 28/7-63/10 28/49-9/10 28/7-9/70