Subtract 7/45 from 20/6
1st number: 3 2/6, 2nd number: 7/45
20/6 - 7/45 is 143/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 6 × 15 = 90,
20/6 = 20 × 15/6 × 15 = 300/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
7/45 = 7 × 2/45 × 2 = 14/90 - Subtract the two like fractions:
300/90 - 14/90 = 300 - 14/90 = 286/90 - After reducing the fraction, the answer is 143/45
- In mixed form: 38/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/6-7/45 20/6-14/45 20/12-7/45 20/6-7/90 60/6-7/45 20/6-21/45 20/18-7/45 20/6-35/45 20/30-7/45 20/6-49/45 20/42-7/45