Subtract 20/16 from 56/18
1st number: 3 2/18, 2nd number: 1 4/16
56/18 - 20/16 is 67/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 18 × 8 = 144,
56/18 = 56 × 8/18 × 8 = 448/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
20/16 = 20 × 9/16 × 9 = 180/144 - Subtract the two like fractions:
448/144 - 180/144 = 448 - 180/144 = 268/144 - After reducing the fraction, the answer is 67/36
- In mixed form: 131/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18-40/16 56/36-20/16 56/18-20/32 56/18-60/16 56/54-20/16 56/18-20/48 56/90-20/16 56/18-20/80