Subtract 12/81 from 84/16
1st number: 5 4/16, 2nd number: 12/81
84/16 - 12/81 is 551/108.
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,
84/16 = 84 × 81/16 × 81 = 6804/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
12/81 = 12 × 16/81 × 16 = 192/1296 - Subtract the two like fractions:
6804/1296 - 192/1296 = 6804 - 192/1296 = 6612/1296 - After reducing the fraction, the answer is 551/108
- In mixed form: 511/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/16-24/81 84/32-12/81 84/16-36/81 84/48-12/81 84/16-60/81 84/80-12/81 84/16-84/81