Subtract 16/15 from 8/18
1st number: 8/18, 2nd number: 1 1/15
8/18 - 16/15 is -28/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
8/18 = 8 × 5/18 × 5 = 40/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
16/15 = 16 × 6/15 × 6 = 96/90 - Subtract the two like fractions:
40/90 - 96/90 = 40 - 96/90 = -56/90 - After reducing the fraction, the answer is -28/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18-16/15 8/18-32/15 8/36-16/15 8/18-16/30 24/18-16/15 8/18-48/15 8/54-16/15 8/18-16/45 40/18-16/15 8/18-80/15 8/90-16/15 8/18-16/75 56/18-16/15