Subtract 16/10 from 21/7
1st number: 3 0/7, 2nd number: 1 6/10
21/7 - 16/10 is 7/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
21/7 = 21 × 10/7 × 10 = 210/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
16/10 = 16 × 7/10 × 7 = 112/70 - Subtract the two like fractions:
210/70 - 112/70 = 210 - 112/70 = 98/70 - After reducing the fraction, the answer is 7/5
- In mixed form: 12/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/7-16/10 21/7-32/10 21/14-16/10 21/7-16/20 63/7-16/10 21/7-48/10 21/7-16/30 21/7-80/10 21/35-16/10 21/7-16/50 21/49-16/10 21/7-16/70