Subtract 35/28 from 84/21
1st number: 4 0/21, 2nd number: 1 7/28
84/21 - 35/28 is 11/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
84/21 = 84 × 4/21 × 4 = 336/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
35/28 = 35 × 3/28 × 3 = 105/84 - Subtract the two like fractions:
336/84 - 105/84 = 336 - 105/84 = 231/84 - After reducing the fraction, the answer is 11/4
- In mixed form: 23/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21-70/28 84/42-35/28 84/21-35/56 84/63-35/28 84/21-35/84