Subtract 9/10 from 2/28
2/28 - 9/10 is -29/35.
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,
2/28 = 2 × 5/28 × 5 = 10/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
9/10 = 9 × 14/10 × 14 = 126/140 - Subtract the two like fractions:
10/140 - 126/140 = 10 - 126/140 = -116/140 - After reducing the fraction, the answer is -29/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/28-9/10 2/28-18/10 2/56-9/10 2/28-9/20 6/28-9/10 2/28-27/10 2/84-9/10 2/28-9/30 10/28-9/10 2/28-45/10 2/28-9/50 14/28-9/10 2/28-63/10 2/28-9/70