Subtract 16/6 from 21/15
1st number: 1 6/15, 2nd number: 2 4/6
21/15 - 16/6 is -19/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 6 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
21/15 = 21 × 2/15 × 2 = 42/30 - Likewise, for the 2nd fraction, since 6 × 5 = 30,
16/6 = 16 × 5/6 × 5 = 80/30 - Subtract the two like fractions:
42/30 - 80/30 = 42 - 80/30 = -38/30 - After reducing the fraction, the answer is -19/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/15-16/6 21/15-32/6 21/30-16/6 21/15-16/12 63/15-16/6 21/15-48/6 21/45-16/6 21/15-16/18 21/15-80/6 21/75-16/6 21/15-16/30 21/15-16/42