Subtract 15/8 from 18/16
1st number: 1 2/16, 2nd number: 1 7/8
18/16 - 15/8 is -3/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 8 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 16 × 1 = 16,
18/16 = 18 × 1/16 × 1 = 18/16 - Likewise, for the 2nd fraction, since 8 × 2 = 16,
15/8 = 15 × 2/8 × 2 = 30/16 - Subtract the two like fractions:
18/16 - 30/16 = 18 - 30/16 = -12/16 - After reducing the fraction, the answer is -3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/16-15/8 18/16-30/8 18/32-15/8 18/16-15/16 54/16-15/8 18/16-45/8 18/48-15/8 18/16-15/24 90/16-15/8 18/16-75/8 18/80-15/8 18/16-15/40 18/16-15/56