Subtract 20/36 from 90/12
1st number: 7 6/12, 2nd number: 20/36
90/12 - 20/36 is 125/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
90/12 = 90 × 3/12 × 3 = 270/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
20/36 = 20 × 1/36 × 1 = 20/36 - Subtract the two like fractions:
270/36 - 20/36 = 270 - 20/36 = 250/36 - After reducing the fraction, the answer is 125/18
- In mixed form: 617/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12-40/36 90/24-20/36 90/12-20/72 90/12-60/36 90/36-20/36 90/60-20/36 90/84-20/36