Subtract 75/20 from 30/5
1st number: 6 0/5, 2nd number: 3 15/20
30/5 - 75/20 is 9/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
30/5 = 30 × 4/5 × 4 = 120/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
75/20 = 75 × 1/20 × 1 = 75/20 - Subtract the two like fractions:
120/20 - 75/20 = 120 - 75/20 = 45/20 - After reducing the fraction, the answer is 9/4
- In mixed form: 21/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/5-75/20 30/10-75/20 30/5-75/40 90/5-75/20 30/15-75/20 30/5-75/60 30/25-75/20 30/35-75/20