Subtract 2/21 from 36/28
1st number: 1 8/28, 2nd number: 2/21
36/28 - 2/21 is 25/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
36/28 = 36 × 3/28 × 3 = 108/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
2/21 = 2 × 4/21 × 4 = 8/84 - Subtract the two like fractions:
108/84 - 8/84 = 108 - 8/84 = 100/84 - After reducing the fraction, the answer is 25/21
- In mixed form: 14/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/28-2/21 36/28-4/21 36/56-2/21 36/28-2/42 36/28-6/21 36/84-2/21 36/28-2/63 36/28-10/21 36/28-14/21