Subtract 5/36 from 80/21
1st number: 3 17/21, 2nd number: 5/36
80/21 - 5/36 is 925/252.
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,
80/21 = 80 × 12/21 × 12 = 960/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
5/36 = 5 × 7/36 × 7 = 35/252 - Subtract the two like fractions:
960/252 - 35/252 = 960 - 35/252 = 925/252 - In mixed form: 3169/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21-10/36 80/42-5/36 80/21-5/72 80/21-15/36 80/63-5/36 80/21-25/36 80/21-35/36