Subtract 18/28 from 9/5
1st number: 1 4/5, 2nd number: 18/28
9/5 - 18/28 is 81/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 5 × 28 = 140,
9/5 = 9 × 28/5 × 28 = 252/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
18/28 = 18 × 5/28 × 5 = 90/140 - Subtract the two like fractions:
252/140 - 90/140 = 252 - 90/140 = 162/140 - After reducing the fraction, the answer is 81/70
- In mixed form: 111/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/5-18/28 9/5-36/28 9/10-18/28 9/5-18/56 27/5-18/28 9/5-54/28 9/15-18/28 9/5-18/84 45/5-18/28 9/5-90/28 9/25-18/28 63/5-18/28 9/35-18/28