Subtract 20/90 from 80/12
1st number: 6 8/12, 2nd number: 20/90
80/12 - 20/90 is 58/9.
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,
80/12 = 80 × 15/12 × 15 = 1200/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
20/90 = 20 × 2/90 × 2 = 40/180 - Subtract the two like fractions:
1200/180 - 40/180 = 1200 - 40/180 = 1160/180 - After reducing the fraction, the answer is 58/9
- In mixed form: 64/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12-40/90 80/24-20/90 80/12-60/90 80/36-20/90 80/60-20/90 80/84-20/90