Subtract 16/81 from 3/4
3/4 - 16/81 is 179/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
3/4 = 3 × 81/4 × 81 = 243/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
16/81 = 16 × 4/81 × 4 = 64/324 - Subtract the two like fractions:
243/324 - 64/324 = 243 - 64/324 = 179/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/4-16/81 3/4-32/81 3/8-16/81 9/4-16/81 3/4-48/81 3/12-16/81 15/4-16/81 3/4-80/81 3/20-16/81 21/4-16/81 3/28-16/81