Subtract 81/6 from 16/30
1st number: 16/30, 2nd number: 13 3/6
16/30 - 81/6 is -389/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 6 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
16/30 = 16 × 1/30 × 1 = 16/30 - Likewise, for the 2nd fraction, since 6 × 5 = 30,
81/6 = 81 × 5/6 × 5 = 405/30 - Subtract the two like fractions:
16/30 - 405/30 = 16 - 405/30 = -389/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/30-81/6 16/60-81/6 16/30-81/12 48/30-81/6 16/90-81/6 16/30-81/18 80/30-81/6 16/30-81/30 16/30-81/42