Subtract 12/9 from 30/10
1st number: 3 0/10, 2nd number: 1 3/9
30/10 - 12/9 is 5/3.
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,
30/10 = 30 × 9/10 × 9 = 270/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
12/9 = 12 × 10/9 × 10 = 120/90 - Subtract the two like fractions:
270/90 - 120/90 = 270 - 120/90 = 150/90 - After reducing the fraction, the answer is 5/3
- In mixed form: 12/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/10-12/9 30/10-24/9 30/20-12/9 30/10-12/18 90/10-12/9 30/10-36/9 30/10-12/27 30/10-60/9 30/50-12/9 30/10-12/45 30/10-84/9 30/70-12/9 30/10-12/63