Subtract 90/10 from 9/28
1st number: 9/28, 2nd number: 9 0/10
9/28 - 90/10 is -243/28.
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,
9/28 = 9 × 5/28 × 5 = 45/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
90/10 = 90 × 14/10 × 14 = 1260/140 - Subtract the two like fractions:
45/140 - 1260/140 = 45 - 1260/140 = -1215/140 - After reducing the fraction, the answer is -243/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/28-90/10 9/56-90/10 9/28-90/20 27/28-90/10 9/84-90/10 9/28-90/30 45/28-90/10 9/28-90/50 63/28-90/10 9/28-90/70