Subtract 30/45 from 20/4
1st number: 5 0/4, 2nd number: 30/45
20/4 - 30/45 is 13/3.
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,
30/45 = 30 × 4/45 × 4 = 120/180 - Subtract the two like fractions:
900/180 - 120/180 = 900 - 120/180 = 780/180 - After reducing the fraction, the answer is 13/3
- In mixed form: 41/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/4-30/45 20/4-60/45 20/8-30/45 20/4-30/90 60/4-30/45 20/4-90/45 20/12-30/45 20/28-30/45