Subtract 10/5 from 16/21
1st number: 16/21, 2nd number: 2 0/5
16/21 - 10/5 is -26/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
16/21 = 16 × 5/21 × 5 = 80/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
10/5 = 10 × 21/5 × 21 = 210/105 - Subtract the two like fractions:
80/105 - 210/105 = 80 - 210/105 = -130/105 - After reducing the fraction, the answer is -26/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/21-10/5 16/21-20/5 16/42-10/5 48/21-10/5 16/21-30/5 16/63-10/5 16/21-10/15 80/21-10/5 16/21-50/5 16/21-10/25 16/21-70/5 16/21-10/35