Subtract 10/90 from 80/10
1st number: 8 0/10, 2nd number: 10/90
80/10 - 10/90 is 71/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
80/10 = 80 × 9/10 × 9 = 720/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
10/90 = 10 × 1/90 × 1 = 10/90 - Subtract the two like fractions:
720/90 - 10/90 = 720 - 10/90 = 710/90 - After reducing the fraction, the answer is 71/9
- In mixed form: 78/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/10-20/90 80/20-10/90 80/10-30/90 80/30-10/90 80/10-50/90 80/50-10/90 80/10-70/90 80/70-10/90