Subtract 80/90 from 35/12
1st number: 2 11/12, 2nd number: 80/90
35/12 - 80/90 is 73/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
35/12 = 35 × 15/12 × 15 = 525/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
80/90 = 80 × 2/90 × 2 = 160/180 - Subtract the two like fractions:
525/180 - 160/180 = 525 - 160/180 = 365/180 - After reducing the fraction, the answer is 73/36
- In mixed form: 21/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/12-80/90 35/24-80/90 35/36-80/90 35/60-80/90 35/84-80/90