Subtract 15/20 from 80/10
1st number: 8 0/10, 2nd number: 15/20
80/10 - 15/20 is 29/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
80/10 = 80 × 2/10 × 2 = 160/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
15/20 = 15 × 1/20 × 1 = 15/20 - Subtract the two like fractions:
160/20 - 15/20 = 160 - 15/20 = 145/20 - After reducing the fraction, the answer is 29/4
- In mixed form: 71/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/10-30/20 80/20-15/20 80/10-15/40 80/10-45/20 80/30-15/20 80/10-15/60 80/10-75/20 80/50-15/20 80/70-15/20