Subtract 45/20 from 30/3
1st number: 10 0/3, 2nd number: 2 5/20
30/3 - 45/20 is 31/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 3 × 20 = 60,
30/3 = 30 × 20/3 × 20 = 600/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
45/20 = 45 × 3/20 × 3 = 135/60 - Subtract the two like fractions:
600/60 - 135/60 = 600 - 135/60 = 465/60 - After reducing the fraction, the answer is 31/4
- In mixed form: 73/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/3-45/20 30/3-90/20 30/6-45/20 30/3-45/40 90/3-45/20 30/9-45/20 30/3-45/60 30/15-45/20 30/21-45/20