Subtract 2/36 from 84/21
1st number: 4 0/21, 2nd number: 2/36
84/21 - 2/36 is 71/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
84/21 = 84 × 12/21 × 12 = 1008/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
2/36 = 2 × 7/36 × 7 = 14/252 - Subtract the two like fractions:
1008/252 - 14/252 = 1008 - 14/252 = 994/252 - After reducing the fraction, the answer is 71/18
- In mixed form: 317/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21-4/36 84/42-2/36 84/21-2/72 84/21-6/36 84/63-2/36 84/21-10/36 84/21-14/36