Subtract 80/5 from 75/20
1st number: 3 15/20, 2nd number: 16 0/5
75/20 - 80/5 is -49/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
75/20 = 75 × 1/20 × 1 = 75/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
80/5 = 80 × 4/5 × 4 = 320/20 - Subtract the two like fractions:
75/20 - 320/20 = 75 - 320/20 = -245/20 - After reducing the fraction, the answer is -49/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/40-80/5 75/20-80/10 75/60-80/5 75/20-80/15 75/20-80/25 75/20-80/35