Subtract 20/18 from 2/16
1st number: 2/16, 2nd number: 1 2/18
2/16 - 20/18 is -71/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 18 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 16 × 9 = 144,
2/16 = 2 × 9/16 × 9 = 18/144 - Likewise, for the 2nd fraction, since 18 × 8 = 144,
20/18 = 20 × 8/18 × 8 = 160/144 - Subtract the two like fractions:
18/144 - 160/144 = 18 - 160/144 = -142/144 - After reducing the fraction, the answer is -71/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/16-20/18 2/16-40/18 2/32-20/18 2/16-20/36 6/16-20/18 2/16-60/18 2/48-20/18 2/16-20/54 10/16-20/18 2/80-20/18 2/16-20/90 14/16-20/18