Subtract 4/80 from 75/20
1st number: 3 15/20, 2nd number: 4/80
75/20 - 4/80 is 37/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
75/20 = 75 × 4/20 × 4 = 300/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
4/80 = 4 × 1/80 × 1 = 4/80 - Subtract the two like fractions:
300/80 - 4/80 = 300 - 4/80 = 296/80 - After reducing the fraction, the answer is 37/10
- In mixed form: 37/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/20-8/80 75/40-4/80 75/20-12/80 75/60-4/80 75/20-20/80 75/20-28/80