Subtract 18/10 from 28/18
1st number: 1 10/18, 2nd number: 1 8/10
28/18 - 18/10 is -11/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
28/18 = 28 × 5/18 × 5 = 140/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
18/10 = 18 × 9/10 × 9 = 162/90 - Subtract the two like fractions:
140/90 - 162/90 = 140 - 162/90 = -22/90 - After reducing the fraction, the answer is -11/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18-18/10 28/18-36/10 28/36-18/10 28/18-18/20 84/18-18/10 28/18-54/10 28/54-18/10 28/18-18/30 28/18-90/10 28/90-18/10 28/18-18/50 28/18-18/70