Subtract 3/21 from 12/10
1st number: 1 2/10, 2nd number: 3/21
12/10 - 3/21 is 37/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
12/10 = 12 × 21/10 × 21 = 252/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
3/21 = 3 × 10/21 × 10 = 30/210 - Subtract the two like fractions:
252/210 - 30/210 = 252 - 30/210 = 222/210 - After reducing the fraction, the answer is 37/35
- In mixed form: 12/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/10-3/21 12/10-6/21 12/20-3/21 12/10-3/42 36/10-3/21 12/10-9/21 12/30-3/21 12/10-3/63 60/10-3/21 12/10-15/21 12/50-3/21 84/10-3/21 12/70-3/21