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