Subtract 20/9 from 70/10
1st number: 7 0/10, 2nd number: 2 2/9
70/10 - 20/9 is 43/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
70/10 = 70 × 9/10 × 9 = 630/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
20/9 = 20 × 10/9 × 10 = 200/90 - Subtract the two like fractions:
630/90 - 200/90 = 630 - 200/90 = 430/90 - After reducing the fraction, the answer is 43/9
- In mixed form: 47/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/10-40/9 70/20-20/9 70/10-20/18 70/10-60/9 70/30-20/9 70/10-20/27 70/50-20/9 70/10-20/45 70/10-20/63