Subtract 16/21 from 2/15
2/15 - 16/21 is -22/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
2/15 = 2 × 7/15 × 7 = 14/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
16/21 = 16 × 5/21 × 5 = 80/105 - Subtract the two like fractions:
14/105 - 80/105 = 14 - 80/105 = -66/105 - After reducing the fraction, the answer is -22/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/15-16/21 2/15-32/21 2/30-16/21 2/15-16/42 6/15-16/21 2/15-48/21 2/45-16/21 2/15-16/63 10/15-16/21 2/15-80/21 2/75-16/21 14/15-16/21