Subtract 10/45 from 20/4
1st number: 5 0/4, 2nd number: 10/45
20/4 - 10/45 is 43/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
20/4 = 20 × 45/4 × 45 = 900/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
10/45 = 10 × 4/45 × 4 = 40/180 - Subtract the two like fractions:
900/180 - 40/180 = 900 - 40/180 = 860/180 - After reducing the fraction, the answer is 43/9
- In mixed form: 47/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/4-10/45 20/4-20/45 20/8-10/45 20/4-10/90 60/4-10/45 20/4-30/45 20/12-10/45 20/4-50/45 20/4-70/45 20/28-10/45