Subtract 8/5 from 18/16
1st number: 1 2/16, 2nd number: 1 3/5
18/16 - 8/5 is -19/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
18/16 = 18 × 5/16 × 5 = 90/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
8/5 = 8 × 16/5 × 16 = 128/80 - Subtract the two like fractions:
90/80 - 128/80 = 90 - 128/80 = -38/80 - After reducing the fraction, the answer is -19/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/16-8/5 18/16-16/5 18/32-8/5 18/16-8/10 54/16-8/5 18/16-24/5 18/48-8/5 18/16-8/15 90/16-8/5 18/16-40/5 18/80-8/5 18/16-8/25 18/16-56/5 18/16-8/35