Subtract 12/10 from 21/3
1st number: 7 0/3, 2nd number: 1 2/10
21/3 - 12/10 is 29/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 3 × 10 = 30,
21/3 = 21 × 10/3 × 10 = 210/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
12/10 = 12 × 3/10 × 3 = 36/30 - Subtract the two like fractions:
210/30 - 36/30 = 210 - 36/30 = 174/30 - After reducing the fraction, the answer is 29/5
- In mixed form: 54/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3-12/10 21/3-24/10 21/6-12/10 21/3-12/20 63/3-12/10 21/3-36/10 21/9-12/10 21/3-12/30 21/3-60/10 21/15-12/10 21/3-12/50 21/3-84/10 21/3-12/70