Subtract 20/28 from 12/3
1st number: 4 0/3, 2nd number: 20/28
12/3 - 20/28 is 23/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 3 × 28 = 84,
12/3 = 12 × 28/3 × 28 = 336/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
20/28 = 20 × 3/28 × 3 = 60/84 - Subtract the two like fractions:
336/84 - 60/84 = 336 - 60/84 = 276/84 - After reducing the fraction, the answer is 23/7
- In mixed form: 32/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/3-20/28 12/3-40/28 12/6-20/28 12/3-20/56 36/3-20/28 12/3-60/28 12/9-20/28 12/3-20/84 60/3-20/28 12/15-20/28 84/3-20/28 12/21-20/28