Subtract 16/81 from 20/16
1st number: 1 4/16, 2nd number: 16/81
20/16 - 16/81 is 341/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 81 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 16 × 81 = 1296,
20/16 = 20 × 81/16 × 81 = 1620/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
16/81 = 16 × 16/81 × 16 = 256/1296 - Subtract the two like fractions:
1620/1296 - 256/1296 = 1620 - 256/1296 = 1364/1296 - After reducing the fraction, the answer is 341/324
- In mixed form: 117/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/16-16/81 20/16-32/81 20/32-16/81 60/16-16/81 20/16-48/81 20/48-16/81 20/16-80/81 20/80-16/81