Subtract 12/21 from 4/2
1st number: 2 0/2, 2nd number: 12/21
4/2 - 12/21 is 10/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
4/2 = 4 × 21/2 × 21 = 84/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
12/21 = 12 × 2/21 × 2 = 24/42 - Subtract the two like fractions:
84/42 - 24/42 = 84 - 24/42 = 60/42 - After reducing the fraction, the answer is 10/7
- In mixed form: 13/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/2-12/21 4/2-24/21 4/2-12/42 12/2-12/21 4/2-36/21 4/6-12/21 4/2-12/63 20/2-12/21 4/2-60/21 4/10-12/21 28/2-12/21 4/2-84/21 4/14-12/21