Subtract 7/10 from 30/9
1st number: 3 3/9, 2nd number: 7/10
30/9 - 7/10 is 79/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
30/9 = 30 × 10/9 × 10 = 300/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
7/10 = 7 × 9/10 × 9 = 63/90 - Subtract the two like fractions:
300/90 - 63/90 = 300 - 63/90 = 237/90 - After reducing the fraction, the answer is 79/30
- In mixed form: 219/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/9-7/10 30/9-14/10 30/18-7/10 30/9-7/20 90/9-7/10 30/9-21/10 30/27-7/10 30/9-7/30 30/9-35/10 30/45-7/10 30/9-7/50 30/9-49/10 30/63-7/10 30/9-7/70