Subtract 12/21 from 28/2
1st number: 14 0/2, 2nd number: 12/21
28/2 - 12/21 is 94/7.
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,
28/2 = 28 × 21/2 × 21 = 588/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
12/21 = 12 × 2/21 × 2 = 24/42 - Subtract the two like fractions:
588/42 - 24/42 = 588 - 24/42 = 564/42 - After reducing the fraction, the answer is 94/7
- In mixed form: 133/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/2-12/21 28/2-24/21 28/4-12/21 28/2-12/42 84/2-12/21 28/2-36/21 28/6-12/21 28/2-12/63 28/2-60/21 28/10-12/21 28/2-84/21 28/14-12/21